Surgical instrument matched with arthroscope for use
Technical Field
The invention relates to the technical field of medical instruments, in particular to a surgical instrument matched with an arthroscope.
Background
In recent years, arthroscopic surgery has been widely used in the field of orthopedics and sports medicine. The arthroscope which is commonly used in clinic at present controls capillary hemorrhage in the joint cavity through physiological saline perfusion, so that a satisfactory scope view is obtained. Continuous saline infusion requires that the joint cavity be a relatively tight space, which is often easily achieved in simple single or dual channel arthroscopic surgery. However, complex arthroscopic surgery often requires multiple arthroscopic channels to be established, and frequent switching between the viewing channel and the operative channel is required during surgery, where extravasation of saline perfusate becomes a "rate limiting" element that limits the smooth progress of the surgery.
In theory, the extravasation of saline perfusate can lead to several problems including 1. Reduced perfusion pressure in the joint cavity, increased capillary hemorrhage, blurred vision under the scope, 2. Reduced volume of the joint cavity, reduced operating space, 3. Swelling of the interstitial spaces outside the joint cavity, increased incidence of postoperative osteofascial syndrome, 4. Separation of the epidermis incision and the joint capsule incision due to extravasation of perfusate into the interstitial spaces, reduced patency of arthroscope channels, 5. Massive extravasation of joint perfusate, contamination of the operating table, and easy iatrogenic infection.
In order to reduce the extravasation of normal saline perfusate, capillary hemorrhage can be clinically reduced by using a tourniquet, but the method is only suitable for arthroscopy operation of distal limbs such as knee, ankle, elbow and wrist, and the use time of the tourniquet is strictly limited, usually not more than 1.5 hours, otherwise, the bleeding complications of the limb after operation are easily caused. In addition, for operations such as hip and shoulder, which cannot use tourniquets, a method of controlling blood pressure reduction in general anesthesia is generally used clinically to reduce capillary osmotic pressure, but the method can cause the craniocerebral blood pressure of a patient to be reduced, so that the operation time is also severely limited.
In order to solve the problems, a special matched instrument for arthroscopic surgery, which is convenient to use, simple in structure, safe and practical, needs to be developed, and is one of the tasks to be completed in the current field.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a surgical instrument matched with an arthroscope, which can prevent perfusion fluid from leaking out of the body or tissue gaps in arthroscope operation, and has the characteristics of ensuring the smoothness of arthroscope channels and thoroughly eliminating negative influence of the perfusion fluid leaking out in arthroscope operation on operation.
The technical scheme includes that the surgical instrument matched with the arthroscope comprises a sleeve, a sleeve rod with a conical tip and an outer sheath tube made of plastic, wherein the outer sheath tube is sleeved between two ends of the sleeve, a compression folding area for changing the length of the outer sheath tube is arranged at the right part of the outer sheath tube, a convex shoulder for blocking the right end of the outer sheath tube is arranged at the right end of the sleeve, and the sleeve rod is positioned in the sleeve and extends the conical tip out of the right end of the sleeve.
The compression folding region is a plurality of transverse slits uniformly distributed on the peripheral surface of the right part of the outer sheath tube, and the transverse slits are compressed to generate folding deformation by the right thrust of the left side of the outer sheath tube.
The surgical instrument matched with the arthroscope for use further comprises an adjusting handle and a branch pipe, wherein the adjusting handle is arranged at the left end of the outer sheath barrel, a curved end face is arranged at the left end of the adjusting handle, the branch pipe is further arranged at the left part of the sleeve, the curved end face is in contact with the outer peripheral face of the branch pipe, and an annular boss in butt joint with the sleeve core rod is further arranged at the left end part of the sleeve.
The surgical instrument matched with the arthroscope further comprises a limit ring, wherein the limit ring is of a frustum shape made of plastic and provided with a central hole, and the limit ring is sleeved on the sleeve between the adjusting handle and the compression folding area.
The surgical instrument matched with the arthroscope is characterized in that the branch pipe is provided with a valve communicated with the inside of the sleeve, and the valve is provided with a connecting belt connected with the sleeve.
According to the surgical instrument matched with the arthroscope, the left end of the sleeve core rod is provided with the clamping end head and the base circular plate for limiting the connection depth of the sleeve, and the triangular tail fin is arranged between the clamping end head and the base circular plate.
The invention provides a surgical instrument matched with an arthroscope, which is provided with a sleeve, a sleeve rod with a conical tip and an outer sheath tube made of plastic, wherein the outer sheath tube is sleeved between two ends of the sleeve, a compression folding area for changing the length of the outer sheath tube is arranged at the right part of the outer sheath tube, a convex shoulder for blocking the right end of the outer sheath tube is arranged at the right end of the sleeve, and the sleeve rod is positioned in the sleeve and extends the conical tip out of the right end of the sleeve. The device has the beneficial technical effects that the conical tip is utilized to penetrate into the joint cavity through the operation knife edge to penetrate into the joint capsule, the left end of the outer sheath tube is pushed to push the adjusting handle, so that the transverse slotting part is compressed to generate folding deformation, skin tissues between the compression folding area and the limiting ring are compressed, the problem that joint perfusate is infiltrated into a tissue gap is solved, the device can be firmly fixed in the joint cavity at the same time, and the problem that a sleeve system slides out due to repeated replacement of arthroscope instruments in operation is solved. The operation is convenient and simple, the operation time is greatly saved, and the occurrence rate of postoperative complications is effectively reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a sleeve structure according to the present invention;
FIG. 3 is a schematic view of the outer sheath of the present invention;
FIG. 4 is a schematic view of a stop collar according to the present invention;
FIG. 5 is a schematic view of a core rod structure according to the present invention;
FIG. 6 is a schematic view of the structure of the outer sheath tube with the limit ring sleeved on the sleeve;
FIG. 7 is a schematic view of the structure of the invention, wherein the structure is that the adjusting handle is pushed rightwards to compress and generate folding deformation at the transverse slit;
FIG. 8 is a schematic view of the present invention in a state of entry or exit from the cortical tissue of a patient through an operative incision;
fig. 9 is a schematic view of the structure of the present invention with the adjustment knob pushed to the right to compress the patient's cortical tissue by the stop collar and compression fold.
The reference numerals of all the components in the figure are a triangular tail wing 1, a clamping end head 2, a base circular plate 3, a branch pipe 4, a valve 5, a connecting belt 6, an outer sheath barrel 7, a compression folding area 8, a boss shoulder 9, a conical tip 10, a transverse slit 11, a folding indentation 12, a limit ring 13, an adjusting handle 14, a curve end face 15, a sleeve 16, a sleeve rod 17, a patient cortex tissue 18, an operation knife edge 19 and an annular boss 20.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 9, the working principle of the present invention is described below with reference to the accompanying drawings:
In the initial state (see fig. 1), the sleeve core rod 17 is positioned in the sleeve 16, and the straight-line-shaped strip on the base circular plate 3 is matched with the straight-line-shaped groove arranged in the annular boss 20 to complete seamless connection. The outer sheath 7 is initially closed and the valve 5 is likewise in a closed condition.
Secondly, the instrument of the invention is put in (see fig. 8 and 9), a surgical knife 19 is firstly cut on the skin of a patient by using a surgical knife, then the instrument of the invention in an initial state is penetrated into the skin by the surgical knife 19, and the joint capsule is penetrated into the joint cavity by using the conical tip 10. Next, the position and depth of the instrument of the present invention is determined under arthroscopic monitoring. The adjusting handle 14 is pushed rightwards to enable the compression folding area 8 positioned in the surgical knife edge 19 to be in an unfolding state, at the moment, the length of the outer sheath tube 7 is shortened, the curve end face 15 of the adjusting handle 14 is kept in contact with the branch pipe 4, and the curve end face 15 is stably propped against. Next, the stop collar 13 is slid to the right along the outer sheath tube 7 until it is confirmed that the stop collar 13 compresses the patient cortical tissue 18 with the compressed fold 8 in the expanded state, preventing extravasation of perfusate outside the body or tissue space during arthroscopic surgery. Finally, the core rod 17 is pulled out of the sleeve 16,
Third, during the surgical operation (see fig. 7), other arthroscopic instruments may directly enter the joint cavity via the unidirectional opening and closing piston disposed inside the cannula 16. When the pressure in the joint cavity is too high, part of joint perfusate can be released through the valve 5 to regulate the pressure. In addition, because the instrument is directly communicated with the inside and the outside of the joint cavity, the external knot can be smoothly sent into the joint cavity through the center of the sleeve 16, thereby effectively avoiding the incarceration effect caused by the possible knot of soft tissues around the arthroscope channel, greatly simplifying the operation steps and saving the operation time.
Fourth, after the operation is finished, the sleeve rod 17 is firstly replaced in the sleeve 16, and the adjusting handle 14 is pulled leftwards under the monitoring of the arthroscope, so that the transverse slit 11 of the outer sheath tube 7 is closed. And simultaneously, the limit ring 13 is moved leftwards, the tissue gap between the joint capsule and the skin is loosened, and the instrument is slowly pulled out of the body. Finally, the skin is sutured, and the operation is completed.
Those skilled in the art can also make appropriate changes and modifications to the above-described embodiments in light of the disclosure and teachings of the above specification. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.