CN110464432A - A kind of surgical instrument being used cooperatively with arthroscope - Google Patents

Abstract

The invention discloses a surgical instrument used in conjunction with an arthroscope, which is provided with a sleeve, a sleeve core rod with a tapered tip and a plastic outer sheath tube; the outer sheath tube is set between two ends of the sleeve tube , the right part of the outer sheath tube is provided with a compression folding area to change the length of the outer sheath tube, the right end of the sleeve is provided with a convex shoulder that blocks the right end of the outer sheath tube, the sleeve core rod is located inside the sleeve tube and the cone tip is extended to the outside of the right end of the casing. Its beneficial technical effects are: not only solves the problem of extravasation of joint perfusion fluid into the tissue space, but also firmly fixes the cannula device in the joint cavity, and solves the problem that the cannula system slips out due to repeated replacement of arthroscopic instruments during the operation. The problem. The operation is convenient and simple, the operation time is greatly saved, and the incidence of postoperative complications is effectively reduced.

Description

A surgical instrument used in conjunction with an arthroscope

technical field

The invention relates to the technical field of medical instruments, in particular to a surgical instrument used in conjunction with an arthroscope.

Background technique

In recent years, arthroscopic surgery has gained widespread popularity in the fields of orthopedics and sports medicine. At present, the commonly used arthroscopy in clinical practice controls capillary bleeding inside the articular cavity through saline perfusion, so as to obtain a satisfactory microscopic view. Continuous saline perfusion requires the joint cavity to be a relatively closed space, which is usually easy to achieve in simple single-channel or double-channel arthroscopic surgery. However, complex arthroscopic surgery often requires the establishment of multiple arthroscopic channels, and frequent switching between the observation channel and the operating channel during the operation. At this time, the extravasation of saline perfusate becomes the "speed-limiting link" that restricts the smooth progress of the operation. .

Theoretically speaking, extravasation of normal saline perfusion fluid will lead to the following problems: 1. Decreased intra-articular perfusion pressure, increased capillary hemorrhage, and blurred vision under the microscope; 2. Decreased joint cavity volume and reduced operating space; 3. The tissue space outside the joint cavity is swollen, which increases the incidence of postoperative osteofascial compartment syndrome; 4. The epidermal incision and the joint capsule incision are separated due to the extravasation of perfusion fluid into the tissue space, and the patency of the arthroscopic channel decreases; 5. A large number of Extravasation of joint perfusion fluid can contaminate the operating table and easily lead to iatrogenic infection.

In order to reduce extravasation of normal saline perfusion fluid, capillary bleeding can be reduced clinically by using a tourniquet, but this method is only applicable to arthroscopic surgery of the distal limbs such as knees, ankles, elbows, and wrists, and the tourniquet used The time also needs to be strictly limited, usually no more than 1.5 hours, otherwise it will easily lead to the occurrence of postoperative limb ischemic complications. In addition, for operations such as hips and shoulders where tourniquets cannot be used, the method of controlled blood pressure reduction during general anesthesia is usually used clinically to reduce capillary osmotic pressure, but this method will cause the patient's cerebral blood pressure to drop, so the operation time There are also strict restrictions.

In order to solve the above-mentioned problems, it is necessary to develop a special supporting instrument for arthroscopic surgery that is easy to use, simple in structure, safe and practical, and this is one of the current urgent tasks in this field.

Contents of the invention

The technical problem to be solved by the present invention is to provide a surgical instrument used in conjunction with an arthroscope, which can prevent the perfusion fluid from leaking out of the body or tissue space during arthroscopic surgery, ensure the patency of the arthroscopic channel, and completely eliminate the arthroscopic surgery. Perfusate extravasation has the characteristics of negative impact on surgical operation.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a surgical instrument used in conjunction with an arthroscope, including a sleeve, a sleeve mandrel with a tapered tip and a plastic outer sheath; The sheath tube is set between the two ends of the sleeve, and the right part of the outer sheath tube is provided with a compression folding area to change the length of the outer sheath tube, and the right end of the sleeve tube is provided with a convex shoulder that blocks the right end of the outer sheath tube. inside the tube and extend the tapered tip out of the right end of the sleeve.

In the aforementioned surgical instrument used in conjunction with an arthroscope, the compressed and folded area is a plurality of transverse slits evenly distributed on the peripheral surface of the right part of the outer sheath, and the transverse slits are made by the thrust from the left side of the outer sheath to the right. Compression produces folding deformation.

The above-mentioned surgical instrument used in conjunction with an arthroscope also includes an adjustment handle and a branch tube. There is a branch pipe, the curved end surface is in contact with the outer peripheral surface of the branch pipe, and an annular boss docked with the sleeve core rod is also provided at the left end of the sleeve pipe.

The above-mentioned surgical instrument used in conjunction with an arthroscope also includes a limit ring, the limit ring is a truncated cone of plastic material and has a central hole, and the limit ring is sleeved between the adjustment handle and the compression folding area. on the casing.

In the aforementioned surgical instrument used in conjunction with an arthroscope, the branch tube is equipped with a valve communicating with the inside of the casing, and the valve is provided with a connecting belt connected with the casing.

The above-mentioned surgical instrument used in conjunction with an arthroscope, the left end of the sleeve core rod is provided with a clamping end and a base circular plate that limits the connection depth of the sleeve, and a triangular edge is provided between the clamping end and the base circular plate. shaped tail.

The present invention provides a surgical instrument used in conjunction with an arthroscope, which is provided with a sleeve, a sleeve core rod with a tapered tip, and a plastic outer sheath; the outer sheath is set between the two ends of the sleeve , the right part of the outer sheath tube is provided with a compression folding area to change the length of the outer sheath tube, the right end of the sleeve is provided with a convex shoulder that blocks the right end of the outer sheath tube, the sleeve core rod is located inside the sleeve tube and the cone tip is extended to the outside of the right end of the sleeve. Its beneficial technical effect is: use the cone tip to penetrate the joint capsule through the surgical knife edge and enter the joint cavity, push the adjustment handle at the left end of the outer sheath tube, so that the transverse slit is compressed to produce folding deformation, which is located between the compression folding area and the limit ring The skin tissue of the joint is compressed, which not only solves the problem of extravasation of the joint perfusion fluid into the tissue space, but also firmly fixes the device in the joint cavity, and solves the problem that the cannula system slips out due to repeated replacement of arthroscopic instruments during the operation. The problem. The operation is convenient and simple, the operation time is greatly saved, and the incidence of postoperative complications is effectively reduced.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the casing structure schematic diagram of the present invention;

Fig. 3 is the structural representation of outer sheath tube of the present invention;

Fig. 4 is a structural schematic diagram of a spacer ring of the present invention;

Fig. 5 is a schematic structural view of the sleeve core rod of the present invention;

Fig. 6 is a schematic structural view of the outer sheath sleeve with the limit ring installed on the sleeve in the present invention;

Fig. 7 is a structural schematic diagram of pushing the adjustment handle to the right to compress the horizontal slit to produce folding deformation in the present invention;

Fig. 8 is a schematic diagram of the state structure of the present invention entering or exiting the patient's cortical tissue through the surgical knife edge;

Fig. 9 is a structural schematic view of pushing the adjustment handle to the right in the present invention so that the patient's cortical tissue is compressed by the limiting ring and the compression folding area.

The labels of the components in the figure are: triangular tail fin 1, clamping end 2, base circular plate 3, branch pipe 4, valve 5, connecting belt 6, outer sheath tube 7, compression folding area 8, convex shoulder 9, Taper tip 10, transverse slit 11, folding indentation 12, limit ring 13, adjustment handle 14, curved end face 15, sleeve tube 16, sleeve core rod 17, patient's cortical tissue 18, surgical knife edge 19, annular boss 20 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 9, the working principle of the present invention is introduced below in conjunction with the accompanying drawings:

1. Initial state: (see Figure 1) the sleeve core rod 17 is located in the casing 16, the "one"-shaped strip on the base circular plate 3 coincides with the "one"-shaped groove set in the annular boss 20 and completes the seamless stitching. The outer sheath tube 7 is initially in a closed state, and the valve 5 is also in a tightly closed state.

Two, insert the apparatus of the present invention: (see Fig. 8, Fig. 9) at first utilize scalpel to cut a surgical incision 19 on patient's skin, then the apparatus of the present invention in initial state is pierced subcutaneously by surgical incision 19, and utilize awl point Head 10 punctures the joint capsule and enters the joint cavity. Next, under arthroscopic monitoring, determine the position and depth of the apparatus of the present invention. Push the adjustment handle 14 to the right, so that the compression and folding area 8 inside the surgical knife edge 19 is in an unfolded state. At this time, the length of the outer sheath tube 7 becomes shorter, and the curved end surface 15 of the adjustment handle 14 keeps in contact with the branch pipe 4, stably resisting the curve End face 15. Next, slide the limiting ring 13 to the right along the outer sheath tube 7 until it is confirmed that the limiting ring 13 and the compressed folding area 8 in the unfolded state compress the patient's cortical tissue 18 to prevent extravasation of the perfusion fluid during arthroscopic surgery. outside the body or in the interstitial space. Finally, the sleeve core rod 17 is pulled out from the sleeve pipe 16,

3. Surgical operation: (see FIG. 7 ) During the surgical operation, other arthroscopic instruments can directly enter the joint cavity through the one-way opening and closing piston provided inside the sleeve tube 16 . When the pressure in the joint cavity is too high, part of the joint perfusion fluid can be released through the valve 5 to adjust the pressure. At the same time, sutures and loose bodies in the joint cavity can be smoothly taken out through the sleeve 16; in addition, because the device of the present invention directly connects the inside of the joint cavity with the outside, the extracorporeal thread knot can be smoothly sent into the joint cavity through the center of the sleeve 16, effectively The possible incarceration effect of the soft tissue around the arthroscopic channel on the knot is avoided, the operation steps are greatly simplified, and the operation time is saved.

Four, pull out the apparatus of the present invention: (see Fig. 8) after the operation finishes, at first sleeve core rod 17 is inserted in the sleeve pipe 16 again, and pull adjustment handle 14 toward the left under arthroscopic monitoring, make the outer sheath cylinder 7 The transverse slit 11 is in a closed state. Simultaneously move the limit ring 13 to the left, loosen the tissue gap between the joint capsule and the skin, and slowly pull out the device of the present invention from the body. Finally, the skin is sutured to complete the operation.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make appropriate changes and modifications to the above embodiment. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (6)

1. A surgical instrument used in conjunction with an arthroscope, characterized in that: it comprises a sleeve pipe (16), a sleeve mandrel (17) with a tapered tip (10) and an outer sheath tube (7) of plastic material; The outer sheath (7) is set between the two ends of the sleeve (16), and the right part of the outer sheath (7) is provided with a compression folding area (8) to change the length of the outer sheath (7). The sleeve (16) ) right end is provided with the convex shoulder (9) that blocks the right end of the outer sheath tube (7), and the sleeve core rod (17) is located inside the casing (16) and stretches out the tapered tip (10) to the casing (16) ) outside the right end. 2. A surgical instrument used in conjunction with an arthroscope according to claim 1, characterized in that: said compression and folding area (8) is a plurality of horizontal transverse areas evenly distributed on the peripheral surface of the right part of the outer sheath (7). Slit (11), through the thrust from the left side of the outer sheath tube (7) to the right, the transverse slit (11) is compressed to produce folding deformation. 3. A surgical instrument used in conjunction with an arthroscope according to claim 2, characterized in that: it also includes an adjustment handle (14) and a branch pipe (4), and the left end of the outer sheath (7) is provided with an adjustment handle (14), the left end of the adjustment handle (14) is provided with a curved end surface (15), and the left part of the sleeve (16) is also provided with a branch pipe (4), and the curved end surface (15) is connected to the branch pipe ( 4) In contact with the outer peripheral surface, an annular boss (20) is also provided at the left end of the casing (16) to dock with the sleeve core rod (17). 4. A surgical instrument used in conjunction with an arthroscope according to claim 3, characterized in that: it also includes a limit ring (13), and the limit ring (13) is a truncated cone of plastic material and is provided with In the central hole, the limit ring (13) is set on the sleeve (16) between the adjustment handle (14) and the compression folding area (8). 5. A kind of surgical instrument used in conjunction with an arthroscope according to claim 4, characterized in that: said branch pipe (4) is provided with a valve (5) communicating with the inside of the sleeve (16), the valve ( 5) A connecting band (6) connected with the casing (16) is provided. 6. A surgical instrument used in conjunction with an arthroscope according to claim 5, characterized in that: the left end of the core rod (17) is provided with a clamping end (2) connected to a limiting sleeve (16) The deep base circular plate (3) is provided with a triangular empennage (1) between the clamping end (2) and the base circular plate (3).