CN211066917U - A surgical instrument used in conjunction with an arthroscope - Google Patents

Abstract

The utility model discloses a surgical instrument used in cooperation with an arthroscope, which is provided with a sleeve, a sleeve core rod with a cone tip and an outer sheath cylinder made of plastic material; the sheath cylinder is sleeved between the two ends of the sleeve, the right part of the sheath cylinder is provided with a compression folding area for changing the length of the sheath cylinder, the right end of the sleeve is provided with a boss shoulder for blocking the right end of the sheath cylinder, and the sleeve core rod is positioned in the sleeve and extends the conical tip out of the right end part of the sleeve. The beneficial technical effects are as follows: not only solves the problem that the joint perfusion fluid is externally infiltrated to the tissue gap, but also can firmly fix the sleeve device in the joint cavity, and solves the problem that the sleeve system slides out due to repeated replacement of arthroscopic instruments in the operation. 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 utility model 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 arthroscope in clinic controls capillary bleeding inside the joint cavity by perfusion of normal saline, so as to obtain a satisfactory view under the microscope. Continuous saline perfusion requires the joint cavity to be a relatively closed space, which is usually easy to achieve in simple single- or dual-channel arthroscopic surgery. However, complex arthroscopic surgery often requires the establishment of multiple arthroscopic channels, and frequent switching between the observation channel and the operation channel is required during the operation. At this time, the extravasation of normal saline perfusate becomes the "speed-limiting link" that restricts the smooth operation of the operation. .

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

In order to reduce the extravasation of normal saline perfusate, capillary bleeding can be reduced clinically by using tourniquets, but this method is only suitable for arthroscopic surgery of distal limbs such as knees, ankles, elbows, and wrists, and tourniquets are used in arthroscopic surgery. The time also needs to be strictly limited, usually no more than 1.5 hours, otherwise it will easily lead to postoperative limb ischemic complications. In addition, for surgeries such as hips and shoulders where tourniquets cannot be used, controlled blood pressure during general anesthesia is usually used clinically to reduce capillary osmotic pressure. There are also strict restrictions.

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

Utility model content

The technical problem to be solved by the utility model is to provide a surgical instrument used in conjunction with an arthroscope, which can prevent the extravasation of the perfusate into the body or the interstitial space during arthroscopic surgery, ensure the smoothness of the arthroscope channel, and completely eliminate the arthroscope The characteristics of intraoperative perfusate extravasation that negatively affect the surgical operation.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is: a surgical instrument used in conjunction with an arthroscope, comprising a sleeve, a sleeve core rod with a tapered tip and a plastic outer sheath; the The outer sheath tube is sleeved between the two ends of the sleeve, the right part of the outer sheath is provided with a compression and folding area for changing the length of the outer sheath, the right end of the sleeve is provided with a convex shoulder that blocks the right end of the outer sheath, and the sleeve core rod is located at the right end of the outer sheath. inside the cannula and protrude the cone tip out of the right end of the cannula.

The above-mentioned surgical instrument used in conjunction with an arthroscope, the compression and folding 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 of 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 further includes an adjusting handle and a branch pipe, the left end of the outer sheath is provided with an adjusting handle, the left end of the adjusting handle is provided with a curved end surface, and the left portion of the sleeve is also provided with an adjusting handle. 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 that is butted with the sleeve core rod is also provided at the left end of the sleeve.

The above-mentioned surgical instrument used in conjunction with an arthroscope further includes a limit ring, the limit ring is a cone-shaped frustum of plastic material and is provided with a center hole, and the limit ring is sleeved on the adjustment handle and the compression folding area. on the casing.

In the above-mentioned surgical instrument used in conjunction with an arthroscope, the branch pipe is provided with a valve that communicates with the inside of the sleeve, and the valve is provided with a connecting belt connected to the sleeve.

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

The utility model 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 sleeved between two ends of the sleeve During the time, a compression and folding area for changing the length of the outer sheath is provided on the right part of the outer sheath, the right end of the sleeve is provided with a convex shoulder that blocks the right end of the outer sheath, and the core rod is located inside the sleeve and the cone tip is extended. to the outside of the right end of the sleeve. The beneficial technical effect is as follows: the cone tip is used to pierce the joint capsule through the scalpel into the joint cavity, and the adjusting handle is pushed on the left end of the outer sheath to compress the transverse slit to produce folding deformation, which is located between the compression and folding area and the limit ring. The skin tissue is compressed, which not only solves the problem of extravasation of the joint perfusate into the tissue space, but also firmly fixes the device in the joint cavity, and solves the problem of the sleeve system slipping 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 the structural representation of the utility model;

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

Fig. 3 is the outer sheath cylinder structure schematic diagram of the present utility model;

4 is a schematic structural diagram of a limit ring of the present invention;

Fig. 5 is the structural schematic diagram of the core rod of the present invention;

Fig. 6 is the structural schematic diagram of the outer sheath tube of the utility model equipped with the limiting ring fitted on the casing;

7 is a schematic structural diagram of the utility model in which the adjustment handle is pushed to the right to compress the transverse slit to produce folding deformation;

8 is a schematic diagram of the state structure of the utility model entering or exiting the cortical tissue of a patient through a surgical knife edge;

Fig. 9 is a schematic structural diagram of the present utility model pushing the adjusting handle to the right, so that the cortical tissue of the patient is compressed by the limiting ring and the compression and folding area.

The parts in the figure are labeled as follows: triangular tail wing 1, clamping end 2, base plate 3, branch pipe 4, valve 5, connecting belt 6, outer sheath 7, compression and folding area 8, boss shoulder 9, Cone tip 10, transverse slit 11, folding indentation 12, limit ring 13, adjustment handle 14, curved end surface 15, sleeve 16, sleeve core rod 17, patient cortical tissue 18, surgical knife edge 19, annular boss 20 .

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments of the present invention are some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

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

First, the initial state: (see Figure 1) the sleeve core rod 17 is located in the sleeve 16, the "one"-shaped strip on the base circular plate 3 matches the "one"-shaped groove set in the annular boss 20 and completes no seam. The outer sheath tube 7 is initially in a closed state, and the valve 5 is also in a tightly closed state.

2. Insert the instrument of the present utility model: (see Fig. 8, Fig. 9) firstly use a scalpel to cut a surgical knife edge 19 on the patient's skin, then insert the instrument of the present utility model in the initial state into the subcutaneous through the surgical knife edge 19, and use The cone tip 10 pierces the joint capsule into the joint cavity. Secondly, under the surveillance of arthroscope, determine the position and depth of the instrument of the utility model. Push the adjusting handle 14 to the right, so that the compression and folding area 8 located inside the surgical knife edge 19 is in an unfolded state. At this time, the length of the outer sheath 7 is shortened. End face 15. Next, slide the limit ring 13 to the right along the outer sheath 7 until it is confirmed that the limit ring 13 and the compressed and folded area 8 in the unfolded state compress the patient's cortical tissue 18 to prevent the extravasation of the perfusate to the arthroscopic surgery. In vitro or interstitial spaces. Finally, pull out the core rod 17 from the sleeve 16,

3. Surgical operation: (see FIG. 7 ) During the operative operation, other arthroscopic instruments can directly enter the joint cavity through the one-way opening and closing piston set inside the sleeve 16 . When the pressure in the joint cavity is too large, part of the joint perfusion fluid can be released through the valve 5 to adjust the pressure. At the same time, the sutures and loose bodies in the joint cavity can be smoothly taken out through the cannula 16; in addition, because the device of the utility model directly connects the inside of the joint cavity and the outside, the external suture can be smoothly sent into the joint cavity through the center of the cannula 16, The incarceration effect that the soft tissue around the arthroscopic channel may cause to the wire knot is effectively avoided, the operation steps are greatly simplified, and the operation time is saved.

Fourth, pull out the instrument of the present utility model: (see Figure 8) after the operation, first reinsert the core rod 17 into the sleeve 16, and pull the adjustment handle 14 to the left under the monitoring of the arthroscope, so that the outer sheath 7 The transverse slit 11 is in a closed state. At the same time, the limit ring 13 is moved to the left to loosen the tissue gap between the joint capsule and the skin, and the device of the utility model is slowly pulled out of the body. Finally, the skin is sutured to complete the operation.

According to the disclosure and teaching of the above description, those skilled in the art to which the present invention pertains can also make appropriate changes and modifications to the above embodiments. 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 the convenience of description and do not constitute any limitation to the present invention.

Claims (6)

1. A surgical instrument for use with an arthroscope, comprising: comprises a sleeve (16), a core rod (17) with a conical tip (10) and an outer sheath cylinder (7) made of plastic; the sheath cylinder (7) is sleeved between two ends of the sleeve (16), a compression folding area (8) for changing the length of the sheath cylinder (7) is arranged at the right part of the sheath cylinder (7), a convex shoulder (9) for blocking the right end of the sheath cylinder (7) is arranged at the right end of the sleeve (16), and the sleeve core rod (17) is positioned inside the sleeve (16) and stretches the conical tip (10) out of the right end of the sleeve (16).

2. A surgical instrument for use with an arthroscope according to claim 1, wherein: the compression folding area (8) is a plurality of transverse slits (11) uniformly distributed on the right circumferential surface of the outer sheath cylinder (7), and the transverse slits (11) are compressed to generate folding deformation through the rightward thrust on the left side of the outer sheath cylinder (7).

3. A surgical instrument for use with an arthroscope according to claim 2, wherein: still including adjusting handle (14) and bleeder (4), outer sheath section of thick bamboo (7) left end is equipped with adjusts handle (14), it is equipped with curved end face (15) to adjust handle (14) left end, sleeve pipe (16) left part still is equipped with bleeder (4), curved end face (15) and bleeder (4) outer peripheral face contact, still be equipped with annular boss (20) with cover core bar (17) butt joint at sleeve pipe (16) left end portion.

4. A surgical instrument for use with an arthroscope according to claim 3, wherein: the folding type plastic pipe bending machine is characterized by further comprising a limiting ring (13), wherein the limiting ring (13) is of a frustum shape made of plastic and is provided with a central hole, and the limiting ring (13) is sleeved on a sleeve (16) between the adjusting handle (14) and the compression folding area (8).

5. A surgical instrument for use with an arthroscope according to claim 4, wherein: the branch pipe (4) is provided with a valve (5) communicated with the interior of the sleeve (16), and the valve (5) is provided with a connecting belt (6) connected with the sleeve (16).

6. A surgical instrument for use with an arthroscope according to claim 5, wherein: the left end of the sleeve core rod (17) is provided with a clamping end (2) and a base circular plate (3) for limiting the connecting depth of the sleeve (16), and a triangular empennage (1) is arranged between the clamping end (2) and the base circular plate (3).

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