Arthroscope channel maintaining device

Abstract

The utility model relates to the technical field of medical surgical instruments, in particular to an arthroscope channel maintaining device which comprises a guide base column, a pushing mechanism, sealing gel and a sealing bottom cover, an expansion mechanism is arranged at the front end of the guide base column, a first guide maintaining channel is arranged in the guide base column, and an external thread part is arranged on the side, away from the expansion mechanism, of the guide base column. The pushing mechanism comprises a pushing sleeve and a pushing nut, the pushing sleeve slidably sleeves the outer side of the guiding base column, the front end of the pushing sleeve is provided with a limiting part used for limiting opening and closing of the expanding mechanism, and the pushing nut is in threaded connection with the external thread part and is fixedly arranged with the pushing sleeve; the sealing gel is arranged in the first guide maintaining channel and internally provided with a second guide maintaining channel, a valve is arranged on the side, away from the expansion mechanism, of the second guide maintaining channel, the sealing bottom cover is in threaded connection with the tail end of the external thread part, and a through hole is formed in the middle of the sealing bottom cover. The device is simple in structure, and the main body structure can be repeatedly used, so that the operation cost is reduced; and the expansion mechanism can effectively reduce postoperative pain.

Description

Technical Field

[0001] The utility model relates to the technical field of medical surgical instruments, in particular to an arthroscopic channel maintaining device. Background Art

[0002] In knee arthroscopy or shoulder arthroscopy, the arthroscope is usually inserted into the joint cavity after a scalpel is used to make an incision of about 0.5-0.8 cm. During the operation, the surgical instruments and arthroscope will repeatedly enter and exit this channel. When the angle of joint movement changes, it is often impossible to find the "inner opening" in a short time, and more tissues and synovium have to be removed due to poor intraoperative vision. Such operations cause more damage to the soft tissues in the joint cavity and lead to longer operation time. Current applications mainly use disposable plastic transparent sleeves to maintain the surgical channel, which cannot push away the soft tissues that obstruct the field of view and are relatively expensive. These traditional channel maintenance devices have limited effects in pushing away tissues such as infrapatellar fat pads or joint synovium to avoid excessive resection to reduce postoperative pain. The shortcomings of existing devices include insufficient adaptability to surgical channels of different sizes, easy displacement during operation, and may not be ideal in maintaining the surgical field of view. At present, improved techniques and surgical techniques are being explored to improve surgical efficiency and reduce operation time.

[0003] Patent No. CN208243581U discloses an arthroscopic surgical channel maintaining device, which is composed of an umbrella-shaped functional part, a shaping layer and a fixing ring. The top of the umbrella-shaped functional part is a convergent end, which faces downward, the middle part of the umbrella-shaped functional part is an operating channel, and the bottom end of the operating channel is a shaping layer limiter protruding outward. The umbrella-shaped functional part is an internal through structure and has an equipment insertion port and a through port at both ends respectively. An anti-leakage barrier is arranged in the operating channel, and a small hole is provided in the middle part of the barrier. The shaping layer is a hollow columnar structure, and the shaping layer is sleeved on the outside of the operating channel of the umbrella-shaped functional part. The fixing ring is a circular pad structure, and a through adjustment hole is arranged in the center of the fixing ring. The outer diameter of the adjustment hole is smaller than the diameter of the shaping layer, and the fixing ring can slide along the outer edge of the rod of the shaping layer. The device is easy to operate and can be inserted after the arthroscopic channel is established. There is no need to clean the synovium, and the lead operation during the operation is more convenient, which greatly improves the surgical efficiency.

[0004] The above-mentioned arthroscopic surgical channel maintaining device has the following problems: the effect of pushing away the infrapatellar fat pad or joint synovium is not good, and excessive soft tissue resection is still required during the operation, resulting in the inability to reduce postoperative pain; it is not adaptable to surgical channels of different sizes, is easy to shift during the operation, and may not be ideal in maintaining the surgical field of view; it cannot be reused and the cost of use is high. Utility Model Content

[0005] The utility model provides an arthroscopic channel maintaining device to solve the problems of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an arthroscopic channel maintaining device, comprising:

[0007] A guide column, wherein an expansion mechanism is disposed at the front end of the guide column and a first guide maintaining channel is disposed inside the guide column, and an external thread portion is disposed at a side of the guide column away from the expansion mechanism;

[0008] A pushing mechanism, the pushing mechanism comprising a pushing sleeve and a pushing nut, the pushing sleeve is slidably sleeved on the outside of the guide base column and a limiting portion for limiting the opening and closing of the expansion mechanism is arranged at the front end, the pushing nut is threadedly connected to the external threaded portion and is fixedly arranged with the pushing sleeve;

[0009] A sealing gel, wherein the sealing gel is disposed in the first guide and maintenance channel and a second guide and maintenance channel is disposed inside the first guide and maintenance channel, and a valve is disposed on a side of the second guide and maintenance channel away from the expansion mechanism;

[0010] The sealing bottom cover is threadedly connected to the end of the external threaded part and a through hole is arranged in the middle.

[0011] As a further improvement, the expansion mechanism includes a rotating base and expansion blades, the rotating base is fixedly arranged at the front end of the guide column, and the expansion blades are rotatably arranged on the rotating base through a torsion spring.

[0012] As a further improvement, the expansion mechanism is provided with a plurality of groups, and a circular array of the expansion mechanism is arranged at the front end of the guide base column.

[0013] As a further improvement, a plurality of groups of limiting rings are arranged on the outer side of the pushing sleeve.

[0014] As a further improvement, the side wall of the sealed bottom cover is provided with a gripping portion, and the gripping portion is provided in two groups, and the two groups of the gripping portions are symmetrically arranged on both sides of the sealed bottom cover.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The main body of the utility model is made of metal, and each component is connected by threads, with a simple structure. After use, the main body is sterilized by high temperature or chemical disinfection and can be reused, thereby reducing the material cost of each operation;

[0017] 2. The expansion mechanism at the front end of the utility model can more effectively push away the infrapatellar fat pad or joint synovium during surgery, reduce tissue resection, potentially reduce postoperative pain and improve the patient's recovery experience;

[0018] 3. The utility model improves the efficiency of instrument operation during surgery, reduces the operation time by simplifying the operation process, and is convenient for beginners to use;

[0019] 4. The utility model reduces the use of plastic products by using metal materials, thereby reducing long-term costs and improving economic benefits;

[0020] 5. The utility model has a replaceable gel structure, and the channel size can be adjusted according to surgical needs, which improves surgical flexibility and adaptability. The combination of the rigid sleeve and the sealing cover ensures stability and sealing during the operation, effectively improving the surgical field of view and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model when expanded;

[0023] Figure 3 It is an exploded view of the utility model;

[0024] Figure 4 It is a side view of the utility model;

[0025] Figure 5 It is a cross-sectional view of the utility model.

[0026] In the figure, 1. guide base column; 11. first guide maintaining channel; 12. external threaded portion; 2. expansion mechanism; 21. rotating base; 22. expansion blade 3. pushing mechanism; 31. pushing sleeve; 311. limiting portion; 312. limiting ring; 32. pushing nut; 4. sealing gel; 41. second guide maintaining channel; 42. valve; 5. sealing bottom cover; 51. through hole; 52. holding portion. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Below is a combination of the embodiments and the attached Figures 1 to 5 , the technical solution of the utility model is further elaborated.

[0030] Example 1

[0031] An arthroscopic channel maintaining device, comprising:

[0032] A guide column 1, wherein an expansion mechanism 2 is disposed at the front end of the guide column 1 and a first guide maintaining channel 11 is disposed inside the guide column 1, and an external threaded portion 12 is disposed at a side of the guide column 1 away from the expansion mechanism 2;

[0033] The pushing mechanism 3 includes a pushing sleeve 31 and a pushing nut 32. The pushing sleeve 31 is slidably sleeved on the outside of the guide column 1 and has a limiting portion 311 at the front end for limiting the opening and closing of the expansion mechanism 2. The pushing nut 32 is threadedly connected to the external threaded portion 12 and is fixedly arranged with the pushing sleeve 31.

[0034] A sealing gel 4, wherein the sealing gel 4 is disposed in the first guiding and maintaining channel 11 and a second guiding and maintaining channel 41 is disposed inside the first guiding and maintaining channel 11, and a valve 42 is disposed on a side of the second guiding and maintaining channel 41 away from the expansion mechanism 2;

[0035] The sealing bottom cover 5 is threadedly connected to the ends of the external threaded portion 12 and a through hole 51 is provided in the middle thereof.

[0036] like Figures 1 to 5 As shown, in actual use of the utility model, the guide base column 1 is first implanted into the patient's joint cavity, and then the pushing nut 32 is rotated backward to drive the pushing sleeve 31 to move backward by pushing the nut 32, so that the limiting portion 311 at the front end of the pushing sleeve 31 moves backward, and the limiting of the expansion mechanism 2 is released. The expansion mechanism 2 is opened outward to support the soft tissue in the joint and avoid excessive resection of the soft tissue to achieve the effect of reducing postoperative pain. After the operation is completed, the pushing nut 32 is rotated forward to drive the pushing sleeve 31 to move forward by pushing the nut 32, so that the limiting portion 311 at the front end of the pushing sleeve 31 moves forward, and the limiting of the expansion mechanism 2 is realized. After the limiting is completed, the guide is taken out of the joint cavity.

[0037] The sealing gel 4 arranged in the first guide maintaining channel 11 can play a role in supporting the arthroscopy. At the same time, a valve is arranged at the end of the sealing gel 4 to prevent the liquid at the front end of the guide from flowing back and keep the surgical area clean.

[0038] The main body of the utility model is made of metal, and each component is connected by threads, so the structure is simple. After use, the main body is sterilized by high temperature or chemical disinfection and can be reused, thereby reducing the material cost of each operation.

[0039] The expansion mechanism 2 located at the front end of the utility model can more effectively push away the infrapatellar fat pad or joint synovium during surgery, reduce tissue resection, potentially reduce postoperative pain and improve the patient's recovery experience.

[0040] The utility model improves the operation efficiency of instruments in surgery, reduces the operation time by simplifying the operation process, and is convenient for beginners to use.

[0041] The utility model reduces the use of plastic products by using metal materials instead, thereby reducing long-term costs and improving economic benefits.

[0042] The utility model has a replaceable gel structure, and the channel size can be adjusted according to the surgical needs, thereby improving the flexibility and adaptability of the surgery. The combination of the rigid sleeve and the sealing cover ensures the stability and sealing during the operation, and effectively improves the surgical field of view and safety.

[0043] As a further preferred embodiment, the expansion mechanism 2 includes a rotating base 21 and an expansion blade 22. The rotating base 21 is fixedly arranged at the front end of the guide column 1. The expansion blade 22 is rotatably arranged on the rotating base 21 through a torsion spring. When the pushing sleeve 31 moves backward, the limiting portion 311 releases the limitation on the expansion mechanism 2. The expansion blade 22 rotates to both sides on the rotating base 21 under the action of the torsion spring to achieve expansion. When the pushing sleeve 31 moves forward, the limiting portion 311 applies a force to the expansion blade 22, so that the expansion blade 22 rotates inward, thereby achieving the limitation of the expansion blade 22.

[0044] As a further preferred embodiment, the expansion mechanism 2 is provided with multiple groups, and the circular array of the expansion mechanism 2 is arranged at the front end of the guide base column 1.

[0045] As a further preferred embodiment, a plurality of groups of limiting rings 312 are provided on the outer side of the pushing sleeve 31, and the limiting rings 312 are used to limit the device to ensure the stability of the device during use.

[0046] As a further preferred embodiment, the side wall of the sealed bottom cover 5 is provided with a gripping portion 52, and the gripping portion 52 is provided with two groups. The two groups of gripping portions 52 are symmetrically arranged on both sides of the sealed bottom cover 5 to facilitate doctors to perform surgical operations.

[0047] As a further preferred embodiment, the guide column 1 of the present invention is preferably 4 mm in diameter and 40 mm in length, and is suitable for maintaining a knee arthroscopy channel.

[0048] As a further preferred embodiment, the guide column 1 of the present invention is preferably 8.25 mm in diameter and 100 mm in length, and is suitable for maintaining a shoulder arthroscopy channel.

[0049] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An arthroscopic channel maintaining device, characterized in that: include: A guide column (1), wherein an expansion mechanism (2) is provided at the front end of the guide column (1) and a first guide maintaining channel (11) is provided inside the guide column (1), and an external threaded portion (12) is provided on a side of the guide column (1) away from the expansion mechanism (2); A pushing mechanism (3), the pushing mechanism (3) comprising a pushing sleeve (31) and a pushing nut (32), the pushing sleeve (31) being slidably sleeved on the outside of the guide base column (1) and having a limiting portion (311) at its front end for limiting the opening and closing of the expansion mechanism (2), the pushing nut (32) being threadedly connected to the external threaded portion (12) and being fixedly arranged on the pushing sleeve (31); A sealing gel (4), wherein the sealing gel (4) is arranged in the first guide and maintenance channel (11) and a second guide and maintenance channel (41) is arranged inside the first guide and maintenance channel (11), and a valve (42) is arranged on a side of the second guide and maintenance channel (41) away from the expansion mechanism (2); A sealed bottom cover (5), wherein the sealed bottom cover (5) and the external threaded portion (12) are threadedly connected at the ends thereof and a through hole (51) is provided in the middle thereof.

2. An arthroscopic channel maintaining device according to claim 1, characterized in that: The expansion mechanism (2) comprises a rotating base (21) and expansion blades (22); the rotating base (21) is fixedly arranged at the front end of the guide column (1); and the expansion blades (22) are rotatably arranged on the rotating base (21) via a torsion spring.

3. An arthroscopic channel maintaining device according to claim 2, characterized in that: The expansion mechanisms (2) are provided in multiple groups, and the expansion mechanisms (2) are arranged in a circular array at the front end of the guide base column (1).

4. The arthroscopic channel maintaining device according to claim 1, characterized in that: A plurality of groups of limiting rings (312) are arranged on the outside of the pushing sleeve (31).

5. The arthroscopic channel maintaining device according to claim 1, characterized in that: The side wall of the sealed bottom cover (5) is provided with a gripping portion (52), and the gripping portion (52) is provided in two groups, and the two groups of the gripping portions (52) are symmetrically arranged on both sides of the sealed bottom cover (5).

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