CN217162180U

CN217162180U - Retractor for soft tissue at greater trochanter of hip joint replacement

Info

Publication number: CN217162180U
Application number: CN202220451756.8U
Authority: CN
Inventors: 史明敏; 孙梦皓; 王聪; 周辰鹤
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-08-12
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a big rotor department's soft tissue retractor is replaced to hip joint, including the distraction rod, the one end of distraction rod is provided with promotes the piece, and the one end that promotes the piece is provided with the protection piece, and the distraction rod is L type structure, and the other end of distraction rod is provided with handheld mechanism, and handheld mechanism contains holding rod, lag, internal thread groove, external thread groove, rubber sleeve and a plurality of anti-skidding draw-in grooves, and the holding rod rotates with the other end of distraction rod to be connected, the outer wall of holding rod and the inner wall fixed connection of lag. Through the pole that leads off of L type structure, and the conical piece that promotes, be convenient for stretch into wound department, through promoting handheld body, be convenient for lead out the soft tissue, avoid traditional retractor to the destruction of soft tissue, simultaneously through pulling off of the pole that leads off, be convenient for show greater trochanter department's organizational structure makes medical staff have sufficient space and the field of vision to perform the operation, simultaneously through the protection piece, reduces the wound area, reduces patient's misery to shorten patient's recovery time.

Description

Soft tissue retractor at greater trochanter for hip joint replacement

Technical Field

The utility model relates to the field of medical equipment, in particular to a hip joint replacement greater trochanter soft tissue retractor.

Background

In the total hip joint replacement, the greater trochanter accidental fracture may occur due to factors such as osteoporosis, hip varus, too far femoral neck osteotomy and the like, the trochanter osteotomy is beneficial to exposing the hip joint in the total hip joint replacement and revision, and in the operation process, the soft tissue at the greater trochanter part of the hip joint replacement needs to be retracted, so that the medical staff can conveniently process the greater trochanter part;

in the existing process of retracting soft tissues, a traditional push-pull tilting retractor is used, the damage to the soft tissues is easily caused due to the fact that one end of the retractor is large, and the use of the traditional retractor is inconvenient due to the fact that instruments are more in the operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hip joint replacement greater trochanter department soft tissue retractor to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a soft tissue retractor at a greater trochanter for hip joint replacement comprises a retraction rod, wherein one end of the retraction rod is fixedly connected with a pushing block, one end of the pushing block is fixedly connected with a protection block, the retraction rod is of an L-shaped structure, and the other end of the retraction rod is provided with a handheld mechanism;

the handheld mechanism comprises a holding rod, a protecting sleeve, an inner thread groove, an outer thread groove, a rubber sleeve and a plurality of anti-skidding clamping grooves, wherein the holding rod is rotatably connected with the other end of the retracting rod.

Preferably, the outer wall of the holding rod is fixedly connected with the inner wall of the protective sleeve.

Preferably, the internal thread groove is formed in the inner wall of the holding rod, and the external thread groove is formed in the outer wall of the retracting rod.

Preferably, the internal thread groove is in threaded connection with the external thread groove, and the rubber sleeve is fixedly connected with the outer wall of the retraction rod.

Preferably, the rubber sleeve is arranged above the external thread groove, and the internal thread groove is rotatably connected with the outer wall of the rubber sleeve.

Preferably, it is a plurality of the outer wall of lag is seted up to antiskid draw-in groove equidistance.

Preferably, the diameter of the retraction rod (1) is 4-5 mm.

Preferably, the pushing block (2), the protection block (3) and the retraction rod (1) are all made of steel and are of an integrated structure formed by casting.

The utility model discloses a technological effect and advantage:

(1) the utility model discloses utilize the setting mode that tractive pole, promotion piece and protection piece cooperate, through the tractive pole of L type structure, and conical promotion piece, be convenient for stretch into wound department, through promoting handheld mechanism, be convenient for pull out the soft tissue, avoid the destruction to the soft tissue of traditional retractor, through pulling open of tractive pole simultaneously, be convenient for show greater trochanter department's organizational structure, make medical staff have sufficient space and field of vision to carry out the operation, simultaneously through the protection piece, reduce the wound area, reduce patient's misery, thereby shorten patient's recovery time;

(2) the utility model discloses utilize holding rod and lag matched with mode of setting up, through the lag, improve the stability of taking the distraction rod, prevent the slippage of distraction rod at the in-process hard, through the holding rod with the dismantlement of distraction rod, avoid many times disinfection to cause the damage to the lag, influence the use of distraction rod, threaded connection through holding rod and distraction rod, be convenient for to the change and the disinfection of holding rod, through the anti-skidding draw-in groove, make the use of holding rod more stable, through the rubber sleeve, be convenient for improve the stability that holding rod and distraction rod are connected, prevent the random rotation of internal thread groove and external thread groove, improve the stability that the distraction rod used.

Drawings

Fig. 1 is the schematic diagram of the whole practical structure of the utility model.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic view of the front cross-sectional structure of the holding rod of the present invention.

In the figure: 1. a retraction lever; 2. a pushing block; 3. a protection block; 4. a hand-held mechanism; 401. a holding rod; 402. a protective sleeve; 403. an internal thread groove; 404. an external thread groove; 405. a rubber sleeve; 406. antiskid draw-in groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a soft tissue retractor for replacing greater trochanter of hip joint, as shown in figures 1-3, which comprises a retraction rod 1, wherein the diameter of one end rod of the retraction rod 1 is four millimeters, the retraction rod 1 is of an L-shaped structure, one end of the retraction rod 1 can conveniently extend into the soft tissue of a wound, the other end of the retraction rod 1 can be stably held by hand, meanwhile, the normal use of other instruments in an operation is not influenced by the simple structure of the retraction rod 1, one end of the retraction rod 1 is fixedly connected with a push block 2, the push block 2 is of a round platform structure, the diameter of one end of the push block 2 is less than four millimeters, the push block can conveniently and quickly extend into the soft tissue structure, the soft tissue can be retracted, the treatment of medical staff on the greater trochanter is convenient, one end of the push block 2 is fixedly connected with a protection block 3, the protection block 3 is of a hemisphere structure, the lamination with the soft tissue is convenient, the retraction rod 1 can extend into soft tissue at the greater trochanter without puncturing the soft tissue, so that the wound area is reduced, the pain of a patient is reduced, and the recovery time of the patient is shortened, and the other end of the retraction rod 1 is provided with a handheld mechanism 4; the diameter of the distraction rod 1 is about 4-5mm, so that the operation is convenient, the soft tissue cannot be damaged, and the operation of a doctor is facilitated.

The hand-held mechanism 4 comprises a holding rod 401, a protective sleeve 402, an internal thread groove 403, an external thread groove 404, a rubber sleeve 405 and a plurality of anti-slip clamping grooves 406, wherein the protective sleeve 402 is made of hard materials, the protective sleeve 402 is made of rubber or silica gel, so that the hand-held comfort and stability of the other end of the distraction rod 1 are improved, the holding rod 401 is rotatably connected with the other end of the distraction rod 1, the outer wall of the holding rod 401 is fixedly connected with the inner wall of the protective sleeve 402, the anti-slip clamping grooves 406 are equidistantly arranged on the outer wall of the protective sleeve 402, the friction force between a hand and the protective sleeve 402 is improved through the arrangement of the anti-slip clamping grooves 406, the slippage phenomenon when the distraction rod 1 is held by hand is reduced, the operation is more stable, the internal thread groove 403 is arranged on the inner wall of the holding rod 401, the external thread groove 404 is arranged on the outer wall of the distraction rod 1, the internal thread groove 403 is in threaded connection with the external thread groove 404, the internal thread groove 403 and the external thread groove 404 are arranged on the outer wall of the distraction rod 1, so that the holding rod 401 is conveniently connected with the outer wall of the distraction rod 1, improve the stability of holding rod 401, the dismantlement and the change of holding rod 401 of being convenient for simultaneously, make the practicality of distraction rod 1 higher, rubber sleeve 405 and the outer wall fixed connection of distraction rod 1, rubber sleeve 405 sets up in the top of external thread groove 404, internal thread groove 403 rotates with the outer wall of rubber sleeve 405 and is connected, protection through rubber sleeve 405, prevent the random rotation of internal thread groove 403 and external thread groove 404, reduce the phenomenon that breaks away from of holding rod 401 and distraction rod 1, when making medical staff use distraction rod 1 and lead out the soft tissue, the use of distraction rod 1 is more stable.

The utility model discloses the theory of operation:

when in use, the retraction rod 1 with the L-shaped structure is convenient to take and use, so that the normal use of other instruments is not influenced, the tapered pushing block 2 is convenient to quickly and conveniently extend into the wound of the hip joint, the holding rod 401 at the other end of the retraction rod 1 is pushed to facilitate the retraction of soft tissues, the damage to the soft tissues of the traditional retractor is avoided, meanwhile, the tissue structure at the greater trochanter is convenient to show through the retraction rod 1, so that medical staff has enough space and visual field for performing operations, meanwhile, the hemispherical structure of the protection block 3 is convenient to reduce the wound area, the protection block 3 can not cause damages such as puncture to the soft tissues at the wound, the pain of a patient is reduced, the recovery time of the patient is shortened, the taking stability of the retraction rod 1 is improved through the protective sleeve 402 on the outer wall of the holding rod 401, and the slippage of the retraction rod 1 in the process of exerting force is prevented, through holding rod 401 and the dismantlement of distraction rod 1, avoid many times the disinfection to cause the damage to lag 402, influence the use of distraction rod 1, threaded connection through holding rod 401 and distraction rod 1, be convenient for to holding rod 401's change and disinfection, through anti-skidding draw-in groove 406, make holding rod 401's use more stable, through rubber sleeve 405, be convenient for improve the stability that holding rod 401 and distraction rod 1 are connected, prevent the random rotation of internal thread groove 403 and external thread groove 404, reduce the phenomenon that breaks away from of holding rod 401 and distraction rod 1, improve the stability of distraction rod 1 use.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A soft tissue retractor at a greater trochanter for hip joint replacement comprises a retraction rod (1), and is characterized in that one end of the retraction rod (1) is fixedly connected with a pushing block (2), one end of the pushing block (2) is fixedly connected with a protection block (3), the retraction rod (1) is of an L-shaped structure, and the other end of the retraction rod (1) is provided with a handheld mechanism (4);

the handheld mechanism (4) comprises a holding rod (401), a protective sleeve (402), an internal thread groove (403), an external thread groove (404), a rubber sleeve (405) and a plurality of anti-skid clamping grooves (406), and the holding rod (401) is rotatably connected with the other end of the retraction rod (1).

2. The soft tissue retractor for hip replacement greater trochanter as claimed in claim 1, wherein the outer wall of said grip (401) is fixedly attached to the inner wall of said protective sleeve (402).

3. The retractor for replacing the soft tissue at the greater trochanter of the hip joint as claimed in claim 1, wherein the internal thread groove (403) opens on the inner wall of the holding rod (401), and the external thread groove (404) opens on the outer wall of the retracting rod (1).

4. The soft tissue retractor at the greater trochanter of hip joint replacement according to claim 1, characterized in that the internal thread groove (403) is in threaded connection with the external thread groove (404), and the rubber sleeve (405) is fixedly connected with the outer wall of the retraction rod (1).

5. The soft tissue retractor for hip replacement greater trochanter as claimed in claim 1, wherein the rubber sleeve (405) is disposed over an externally threaded groove (404), and the internally threaded groove (403) is rotatably connected to the outer wall of the rubber sleeve (405).

6. The soft tissue retractor for hip replacement greater trochanter as claimed in claim 1, wherein a plurality of said anti-slip slots (406) are equally spaced on the outer wall of the shield (402).

7. The retractor for replacing the soft tissue at the greater trochanter of the hip joint as claimed in claim 1, wherein the diameter of said retraction rod (1) is 4-5 mm.

8. The soft tissue retractor at the greater trochanter of hip joint replacement according to claim 1, characterized in that the pushing block (2), the protective block (3) and the retraction rod (1) are all made of steel and are of cast and molded integrated structure.