Surgical instrument used in conjunction with arthroscopy

Abstract

The present invention discloses a surgical instrument used in conjunction with an arthroscopy, which is provided with a sleeve, a sleeve core rod with a conical tip, and an outer sheath tube made of plastic material; the outer sheath tube is sleeved between the two ends of the sleeve, a compression folding area for changing the length of the outer sheath tube is provided on the right part of the outer sheath tube, a boss shoulder for blocking the right end of the outer sheath tube is provided on the right end of the sleeve, and the sleeve core rod is located inside the sleeve and extends the conical tip outside the right end of the sleeve. The beneficial technical effect is: it not only solves the problem of joint perfusion fluid extravasation into the tissue gap, but also can firmly fix the sleeve device in the joint cavity, and solves the problem of the sleeve system slipping out due to repeated replacement of arthroscopic instruments during surgery. It makes the surgical operation convenient and simple, greatly saves the operation time, and effectively reduces the incidence of postoperative complications.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a surgical instrument used in conjunction with an arthroscopy. Background Art

[0002] In recent years, arthroscopic surgery has been widely popularized in the field of orthopedics and sports medicine. Currently, the commonly used arthroscopy in clinical practice controls capillary bleeding inside the joint cavity by perfusing normal saline, so as to obtain a satisfactory endoscopic field of view. Continuous perfusion of normal saline requires that the joint cavity is 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 operation channel is required during the operation. At this time, the extravasation of normal saline perfusion fluid becomes the "speed-limiting link" that restricts the smooth progress of the operation.

[0003] Theoretically, extravasation of saline perfusion fluid can lead to the following problems: 1. Decreased perfusion pressure in the joint cavity, increased capillary bleeding, and blurred endoscopic vision; 2. Decreased volume of the joint cavity and reduced operating space; 3. Swelling of the tissue spaces outside the joint cavity, increasing the incidence of postoperative compartment syndrome; 4. The epidermal incision and the joint capsule incision are separated due to extravasation of perfusion fluid into the tissue space, and the patency of the arthroscopic channel is reduced; 5. Large amounts of joint perfusion fluid extravasate, contaminating the operating table and easily leading to nosocomial infection.

[0004] In order to reduce the extravasation of saline perfusion fluid, a tourniquet can be used clinically to reduce capillary bleeding, but this method is only applicable to arthroscopic surgery of distal limbs such as the knee, ankle, elbow, and wrist, and the use time of the tourniquet also needs to be strictly limited, usually not more than 1.5 hours, otherwise it is easy to cause postoperative limb ischemic complications. In addition, for surgeries such as hip and shoulder where a tourniquet cannot be used, controlled hypotension during general anesthesia is usually used clinically to reduce capillary osmotic pressure, but this method will cause a decrease in the patient's intracranial blood pressure, so there are also strict restrictions on the operation time.

[0005] In order to solve the above problems, it is necessary to develop a special supporting instrument for arthroscopic surgery that is easy to use, simple in structure, safe and practical. This is one of the tasks that urgently need to be completed in this field. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a surgical instrument for use in conjunction with an arthroscopy, which can prevent the extravasation of perfusion fluid during arthroscopic surgery from exceeding the body or tissue gaps, ensure the patency of the arthroscopic channel, and completely eliminate the negative impact of extravasation of perfusion fluid during arthroscopic surgery on surgical operations.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a surgical instrument used in conjunction with an arthroscopy, comprising a sleeve, a core rod with a tapered tip and an outer sheath made of plastic; the outer sheath is sleeved between the two ends of the sleeve, a compression folding area for changing the length of the outer sheath is provided on the right part of the outer sheath, a boss shoulder is provided at the right end of the sleeve for blocking the right end of the outer sheath, the core rod is located inside the sleeve and extends the tapered tip to the outside of the right end of the sleeve.

[0008] In the above-mentioned surgical instrument used in conjunction with an arthroscopy, the compression and folding area is a plurality of transverse slits evenly distributed on the right peripheral surface of the outer sheath tube, and the transverse slits are compressed and folded by the rightward thrust from the left side of the outer sheath tube.

[0009] The above-mentioned surgical instrument used in conjunction with an arthroscopy also includes an adjustment handle and a branch tube. The left end of the outer sheath is provided with an adjustment handle, and the left end of the adjustment handle is provided with a curved end surface. The left part of the sleeve is also provided with a branch tube, and the curved end surface is in contact with the outer peripheral surface of the branch tube. An annular boss that docks with the sleeve core rod is also provided at the left end of the sleeve.

[0010] The above-mentioned surgical instrument used in conjunction with an arthroscopy also includes a limiting ring, which is in the shape of a cone made of plastic and has a center hole. The limiting ring is sleeved on the sleeve between the adjustment handle and the compression and folding area.

[0011] In the above-mentioned surgical instrument used in conjunction with an arthroscopy, the branch tube is provided with a valve connected to the interior of the sleeve, and the valve is provided with a connecting belt connected to the sleeve.

[0012] The above-mentioned surgical instrument used in conjunction with an arthroscopy, the left end of the sleeve core rod is provided with a clamping end and a base circular plate for limiting the connection depth of the sleeve, and a triangular tail wing is provided between the clamping end and the base circular plate.

[0013] The present invention provides a surgical instrument for use with an arthroscopy, which is provided with a sleeve, a sleeve core rod with a conical tip and an outer sheath made of plastic; the outer sheath is sleeved between the two ends of the sleeve, a compression folding area for changing the length of the outer sheath is provided on the right part of the outer sheath, a convex shoulder for blocking the right end of the outer sheath is provided on the right end of the sleeve, and the sleeve core rod is located inside the sleeve and extends the conical tip outside the right end of the sleeve. Its beneficial technical effect is: the conical tip is used to penetrate the joint capsule through the surgical incision to enter the joint cavity, and the adjustment handle is pushed at the left end of the outer sheath to compress the transverse slit to produce folding deformation, and the skin tissue between the compression folding area and the limiting ring is compressed, which not only solves the problem of joint perfusion fluid extravasation into the tissue gap, but also can firmly fix the device in the joint cavity at the same time, and solves the problem of the sleeve system slipping out due to repeated replacement of arthroscopic instruments during surgery. It makes the surgical operation convenient and simple, greatly saves the operation time, and effectively reduces the incidence of postoperative complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the casing structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the outer sheath structure of the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the limiting ring of the present invention;

[0018] Figure 5 It is a schematic diagram of the core rod structure of the present invention;

[0019] Figure 6 It is a schematic diagram of the structure in which the outer sheath tube equipped with the limiting ring is sleeved on the sleeve in the present invention;

[0020] Figure 7 It is a structural schematic diagram of the present invention in which the adjusting handle is pushed rightward to compress the transverse slit to generate folding deformation;

[0021] Figure 8 It is a schematic diagram of the state structure of the present invention entering or exiting the patient's cortical tissue through a surgical incision;

[0022] Fig. 9 This is a structural schematic diagram of the present invention in which the adjusting handle is pushed rightward so that the patient's cortical tissue is compressed by the limiting ring and the compression folding area.

[0023] The components in the figure are numbered as follows: triangular tail wing 1, clamping end 2, base circular plate 3, branch pipe 4, valve 5, connecting belt 6, outer sheath 7, compression folding area 8, boss shoulder 9, conical tip 10, transverse slit 11, folding indentation 12, limiting ring 13, adjusting handle 14, curved end surface 15, sleeve 16, sleeve core rod 17, patient's cortical tissue 18, surgical incision 19, annular boss 20. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 9 As shown, the working principle of the present invention is described below in conjunction with the accompanying drawings:

[0026] 1. Initial state: (see Figure 1 ) The sleeve core rod 17 is located in the sleeve 16, and the "I"-shaped strip on the base circular plate 3 coincides with the "I"-shaped groove set in the annular boss 20 and completes seamless connection. The outer sheath tube 7 is initially in a closed state, and the valve 5 is also in a tightly closed state.

[0027] Second, insert the device of the present invention: (see Figure 8 , Fig. 9 ) First, use a scalpel to cut a surgical incision 19 on the patient's skin, then insert the initial state of the instrument of the present invention into the subcutaneous tissue through the surgical incision 19, and use the cone tip 10 to pierce the joint capsule and enter the joint cavity. Secondly, under arthroscopic monitoring, determine the position and depth of the instrument of the present invention. Push the adjustment handle 14 to the right so that the compression folding area 8 located inside the surgical incision 19 is in an expanded state. At this time, the length of the outer sheath 7 becomes shorter, and the curved end surface 15 of the adjustment handle 14 keeps in contact with the branch tube 4, stably supporting the curved end surface 15. Next, slide the limiting ring 13 to the right along the outer sheath 7 until it is confirmed that the limiting ring 13 and the expanded compression folding area 8 are pressing the patient's cortical tissue 18 tightly to prevent the perfusion fluid from extravasating outside the body or the tissue gap during arthroscopic surgery. Finally, pull the core rod 17 out of the sleeve 16,

[0028] 3. Surgical operation: (see Figure 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 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, the sutures and loose bodies in the joint cavity can be smoothly removed through the sleeve 16; in addition, since the instrument of the present invention directly connects the inside of the joint cavity with the outside of the body, the knot outside the body can be smoothly delivered into the joint cavity through the center of the sleeve 16, which effectively avoids the entrapment effect of the knot caused by the soft tissue around the arthroscopic channel, greatly simplifies the surgical operation steps, and saves the operation time.

[0029] Fourth, pull out the device of the present invention: (see Figure 8 ) After the operation, first, the core rod 17 is re-inserted into the sleeve 16, and the adjustment handle 14 is pulled to the left under the monitoring of the arthroscopic device to close the transverse slit 11 of the outer sheath 7. 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 present invention is slowly pulled out of the body. Finally, the skin is sutured to complete the operation.

[0030] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may 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 scope of protection 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

1. A surgical instrument used in conjunction with an arthroscopy, characterized in that: It includes a sleeve (16) and a conical tip (10) A sleeve core rod (17) and an outer sheath tube (7) made of plastic; the outer sheath tube (7) is sleeved between the two ends of the sleeve (16); a compression folding area (8) for changing the length of the outer sheath tube (7) is provided at the right part of the outer sheath tube (7); a boss shoulder (9) for blocking the right end of the outer sheath tube (7) is provided at the right end of the sleeve (16); the sleeve core rod (17) is located inside the sleeve (16) and extends the cone tip (10) outside the right end of the sleeve (16); a clamping end (2) and a base circular plate (3) for limiting the connection depth of the sleeve (16) are provided at the left end of the sleeve core rod (17); a triangular tail wing (1) is provided between the clamping end (2) and the base circular plate (3); It also includes an adjustment handle (14) and a branch tube (4), wherein the adjustment handle (14) is provided at the left end of the outer sheath tube (7), a curved end surface (15) is provided at the left end of the adjustment handle (14), and a branch tube (4) is provided at the left portion of the sleeve (16), wherein the curved end surface (15) contacts the outer peripheral surface of the branch tube (4), and an annular boss (20) is provided at the left end of the sleeve (16) for docking with the sleeve core rod (17); It also includes a limiting ring (13), which is in the shape of a cone and made of plastic and is provided with a central hole. The limiting ring (13) is sleeved on the sleeve (16) between the adjustment handle (14) and the compression folding area (8).

2. A surgical instrument for use with an arthroscopy according to claim 1, characterized in that: The compression folding area (8) is a plurality of transverse slits (11) evenly distributed on the right peripheral surface of the outer sheath tube (7), and the transverse slits (11) are compressed and folded by the rightward thrust from the left side of the outer sheath tube (7).

3. A surgical instrument for use with an arthroscopy according to claim 1, characterized in that: The branch pipe (4) is provided with a valve (5) which is in communication with the interior of the sleeve (16), and the valve (5) is provided with a connecting belt (6) which is connected to the sleeve (16).

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