CN219183902U

CN219183902U - Special drag hook for resecting talus bridge under arthroscope

Info

Publication number: CN219183902U
Application number: CN202320110681.1U
Authority: CN
Inventors: 郭秦炜; 王安鸿; 江东; 史尉利; 陈临新; 陈薇
Original assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Current assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-06-16
Anticipated expiration: 2033-01-19

Abstract

The utility model discloses a special drag hook for resecting a heel talus bridge under an arthroscope, which comprises a head end and a handle, wherein the head end consists of an operation part, a bending part and a connecting part, the back of the operation part is a concave surface, and the operation part is connected with the connecting part through the bending part; the included angle of the bending part is 60-80 degrees; the handle consists of a holding part and an extension part, and the extension part is connected with the connecting part. The special drag hook for resecting the talus bridge under the arthroscope can adapt to the traction direction in the operation, reduces the occupied space under the arthroscope, is convenient for the operator to operate, and avoids the accidental injury of important tendons and neurovascular bundles.

Description

Special drag hook for resecting talus bridge under arthroscope

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a special drag hook for resecting a calcaneal talus bridge under an arthroscope.

Background

The calcaneal talar bridge is also called calcaneal talar union, and is characterized in that abnormal connection is generated between calcaneal talar and talar, so that ankle joint pain, ankle joint and subtalar joint varus are limited, ankle pain is caused after movement or long standing, pain parts are mainly on the inner side of the hindfoot, the ankle joint and the distal end of the malleolus, pain symptoms can be gradually aggravated along with the extension of the disease course, subtalar joint varus movement is limited, some patients can have claudication, ankle joint repeated sprains and even ankle joint instability; often causes clinical symptoms and secondary lesions such as stiff foot, fibular tendon spasm, flat foot, ankle tube syndrome and the like. When the symptoms of the patient are lighter, conservative treatment can be carried out by adjusting the exercise mode and reducing the activity amount, gypsum fixing and braking or using an orthosis, using nonsteroidal anti-inflammatory analgesic drugs and the like; if the symptoms are serious, the operation treatment is needed when the conservation treatment is ineffective, and the currently better operation mode is calcaneal bridge resection under arthroscope, and the method has the advantages of small incision, quick recovery, fewer complications and the like.

Since the heel bridge is adjacent to tendons, nerves and blood vessels, damage to tendons and neurovascular bundles is easily caused when the heel bridge is resected arthroscopically. The current solution is that after entering the joint through an arthroscopic incision in the operation, tendons and neurovascular bundles are pulled to the inner side by a drag hook so as to reduce damage; however, the existing drag hook is in a right angle and is inconsistent with the traction direction in the operation, so that tendons and nerve vascular bundles cannot be effectively drawn to the inner side; the head end of the right-angle drag hook is longer, the space under the mirror is limited, and the traction effect is poor.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a special retractor which can adapt to the traction direction in operation and reduce the space occupied under an arthroscope to resect a calcaneal talar bridge under the arthroscope.

In order to achieve the above purpose, the technical scheme adopted is as follows:

the special drag hook for resecting the talus bridge under the arthroscope comprises a head end and a handle, wherein the head end consists of an operation part, a bending part and a connecting part, the back of the operation part is a concave surface, and the concave surface can accommodate a resecting instrument (a planing tool) to enter, is convenient for resecting operation and is connected with the connecting part through the bending part; the included angle of the bending part is 60-80 degrees, and the angle is more suitable for the traction direction in the operation compared with a right angle drag hook, so that the vascular nerve bundles can be fully traction in the operation; the handle consists of a holding part and an extension part, and the extension part is connected with the connecting part.

Further, the included angle of the bending part is 65-75 degrees.

As another preferable scheme of the utility model, the width of the operation part is 8-12 mm, the curvature radius of the back concave surface is 9-10 mm, the section thickness is 1.5-1.8 mm, the vertical distance between the end part of the operation part and the bending part is 45-50 mm, compared with the length of the conventional right-angle drag hook, the length of the right-angle drag hook is greatly reduced, and the space occupied under an arthroscope can be reduced.

As another preferable scheme of the utility model, the length of the holding part is 60-80 mm, the diameter is 8-12 mm, and the whole length of the special drag hook is 140-150 mm.

As another preferable scheme of the utility model, the surface of the holding part is provided with anti-skid lines, so that the friction force between the hand and the holding part when the operator pulls the vascular nerve bundle is increased.

As another preferable scheme of the utility model, the bottom of the connecting part is provided with a threaded hole, and the end part of the extension part is provided with a stud matched with the threaded hole of the connecting part, so that the head end and the handle are detachably connected.

Compared with the prior art, the special drag hook for resecting the talus bridge under the arthroscope provided by the utility model has the advantages that the angle between the head end and the handle is set to be 60-80 degrees, compared with a right-angle drag hook, the special drag hook is more suitable for the traction direction in the operation, and tendons and neurovascular bundles can be fully traction in the operation; the vertical distance between the end part of the operation part and the bending part is shortened to 45-50 mm, so that the space occupied under the arthroscope is reduced, and the back part is a concave surface which can accommodate the entering of a cutting instrument (a planing tool) and is convenient for operators to operate; the head end and the handle are connected through threads, different head end selections can be carried out according to specific surgical needs, and applicable crowds and application positions are enlarged.

Drawings

Fig. 1 is a schematic structural view of a head end of the present utility model, fig. 2 is a schematic structural view of a handle of the present utility model, fig. 3 is a schematic overall combined view of the present utility model, and fig. 4 is a schematic operational view of the present utility model.

Wherein: 11-an operation part; 12-a bend; 13-a connection; 21-a grip; 22-extension; 31-calcaneus bone bridge; 32-tendons; 33-neurovascular bundle.

Detailed Description

For a better understanding of the present utility model, specific embodiments of the utility model are described in further detail below with reference to the drawings.

As shown in figures 1-3, the special retractor for resecting a calcaneal talus bridge under an arthroscope comprises a head end and a handle, wherein the head end consists of an operation part 11, a bending part 12 and a connecting part 13, the back part of the operation part 11 is a concave surface, the width is 10mm, the curvature radius of the concave surface of the back part is 9.2mm, the thickness of the section is 1.6mm, the vertical distance between the end part of the operation part 11 and the bending part 12 is 47mm, the operation part is connected with the connecting part 13 through the bending part 12, and the included angle of the bending part is 70 degrees; the bottom of the connecting part 13 is provided with a threaded hole; the handle consists of a holding part 21 and an extension part 22, the surface of the holding part 21 is provided with anti-skid lines, the length is 70mm, the diameter is 10mm, and the whole length of the special drag hook is 145mm; the end of the extension part 22 is provided with a stud matched with the threaded hole of the connecting part 13, and is connected with the connecting part 13 through threads.

As shown in fig. 4, after the surgical opening is made at the position of the calcaneal bridge 31, the operator uses the operator 11 to draw the tendon 32 and the neurovascular bundle 33 aside by holding the grip 21 in the hand, and since the angle between the operator 11 and the handle is 70 °, the tendon 32 and the neurovascular bundle 33 are further away from the calcaneal bridge 31, and then the arthroscope is extended into the resection position, and the resections are performed on the calcaneal bridge 31 using the planer tool under the arthroscopic observation.

Because the length of the end part of the operation part 11 is 47mm, the space occupied under the arthroscope is reduced, and the back surface of the operation part 11 is concave, so that the planer tool can be conveniently inserted, and the operation by operators is facilitated. The head end and the handle are connected through threads, and different head ends can be selected according to specific surgical needs, so that applicable crowds and application positions are enlarged.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims

1. A special drag hook for resecting a calcaneal bridge under an arthroscope is characterized by comprising a head end and a handle,

the head end consists of an operation part, a bending part and a connecting part, wherein the back of the operation part is a concave surface and is connected with the connecting part through the bending part; the included angle of the bending part is 60-80 degrees;

the handle consists of a holding part and an extension part, and the extension part is connected with the connecting part.

2. A special retractor for arthroscopic resection of a calcaneal bridge according to claim 1 wherein the width of the operating portion is 8-12 mm, the radius of curvature of the concave back is 9-10 mm, the thickness of the cross section is 1.5-1.8 mm, and the vertical distance between the end of the operating portion and the curved portion is 45-50 mm.

3. A specialized retractor for arthroscopic resection of a calcaneal bridge according to claim 1 wherein said curvature angle is between 65 ° and 75 °.

4. A special retractor for arthroscopic resection of a calcaneal bridge according to claim 1 wherein said grip has a length of 60-80 mm and a diameter of 8-12 mm and said special retractor has an overall length of 140-150 mm.

5. A special retractor for arthroscopic resection of a calcaneal bridge according to claim 1 wherein said grip surface is provided with anti-slip textures.

6. A special retractor for arthroscopic resection of a heel bridge according to claim 1 wherein the bottom of the connecting portion is provided with a threaded hole and the end of the extension portion is provided with a stud that mates with the threaded hole of the connecting portion.