CN218899616U

CN218899616U - Novel tertiary expansion sleeve

Info

Publication number: CN218899616U
Application number: CN202221793101.5U
Authority: CN
Inventors: 李强
Original assignee: First People's Hospital Of Suzhou City
Current assignee: First People's Hospital Of Suzhou City
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2023-04-25
Anticipated expiration: 2032-07-13

Abstract

The utility model discloses a novel three-stage expansion sleeve, which comprises a first-stage sleeve, a second-stage sleeve and a third-stage sleeve, wherein the first-stage sleeve is sleeved in the second-stage sleeve, the second-stage sleeve is sleeved in the third-stage sleeve, and the bottoms of the first-stage sleeve, the second-stage sleeve and the third-stage sleeve are of inverted truncated cone structures. The utility model can solve the technical problems that at present, hollow pedicle screw fixing technology is adopted in China, a guide needle is required to be placed under C-shaped arm perspective or robot navigation, soft tissue expansion is completed in a 3-6-level sleeve, and finally the hollow pedicle screw is placed along the guide needle, so that the number of the levels of the working sleeve is more, the operation is more complicated, and solid pedicle screws cannot be placed.

Description

Novel tertiary expansion sleeve

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a novel three-stage expansion sleeve.

Background

The astronomical TM orthopedic surgery robot is the only orthopedic surgery robot system capable of performing spine full segment (cervical vertebra, thoracic vertebra, lumbar vertebra, sacral vertebra), pelvis and limb fracture surgery internationally at present. The robot can realize the auxiliary completion of the positioning of the surgical instrument or the implant by the mechanical arm through being matched with the mobile X-ray diagnosis equipment (C-shaped X-ray machine). In the operation, the planning mode based on the 2D or 3D image is selected according to different operation modes to simulate the placement of nails, the insertion and extraction nail points and nail paths are calculated through a unique algorithm, the mechanical arm moves to the planning position accurately, and a stable guide needle placement path is provided for doctors by means of the guide sleeve. According to the intraoperative planning, doctors can accurately put the implant into the patient. According to the multi-center clinical test result, compared with the traditional operation, the radiation amount in the operation is reduced by more than 70%, the operation is minimally invasive, the incision is small, the operation time and the bleeding amount in the operation are greatly reduced, and the method has obvious clinical advantages.

Aiming at thoracolumbar fracture surgery under robot navigation, hollow pedicle screw fixing technology is adopted in China at present, and the tool has the common characteristics that: the guide needle is required to be placed under the perspective of the C-shaped arm or the navigation of the robot, soft tissue expansion is completed in the 3-6-level sleeve, and finally the hollow pedicle screw is placed along the guide needle. The working sleeve has more stages and complex operation, and solid pedicle screws cannot be placed in the working sleeve.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a novel three-stage expansion sleeve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel tertiary expansion sleeve, includes one-level sleeve, second grade sleeve and tertiary sleeve, and the inside of second grade sleeve is located to one-level sleeve cover, and the inside of tertiary sleeve is located to second grade sleeve cover, one-level sleeve, second grade sleeve and tertiary telescopic bottom are the structure of falling round platform shape.

Preferably, the bottom of the three-stage sleeve is uniformly provided with a plurality of saw teeth at intervals along the circumferential direction.

Preferably, a handheld part is arranged on the outer side surface of the top of the three-stage sleeve.

Preferably, the tops of the outer side surfaces of the primary sleeve and the secondary sleeve are respectively provided with an anti-skid groove.

Preferably, the length of the primary sleeve is 163mm, the outer diameter is 6.8mm, the inner diameter is 1.4mm, and the length of the bottom of the inverted circular truncated cone-shaped structure is 10.3mm.

Preferably, the length of the secondary sleeve is 145mm, the outer diameter is 13.6mm, the inner diameter is 7mm, and the length of the bottom of the inverted circular truncated cone-shaped structure is 8mm.

Preferably, the length of the three-stage sleeve is 117mm, the outer diameter is 17mm, the inner diameter is 13.8mm, and the length of the bottom of the inverted circular truncated cone-shaped structure is 5mm.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The novel three-stage expansion sleeve provided by the utility model only comprises three sleeves, so that the operation steps are simplified, and through the design of the sawtooth shape of the tip end of the three-stage sleeve and the design of the tail end handle, the three-stage sleeve is convenient to fix on a bone surface through the sawtooth edge and does not slide after a working channel is prepared, and the handheld part is convenient for an assistant to keep stable, so that a solid pedicle screw can be smoothly placed along the prepared working channel under the condition of not reserving a guide pin;

(2) Compared with the existing secondary sleeve, the secondary sleeve provided by the utility model has the advantages that the inner diameter is kept unchanged basically, and the outer diameter is increased, so that the soft tissue expansion times are simplified, and the opening and tapping of the nailing point can be completed in the secondary sleeve.

Drawings

FIG. 1 is a schematic structural view of a novel three-stage expansion sleeve provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of a three-stage sleeve according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a secondary sleeve according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a primary sleeve according to an embodiment of the present utility model;

FIG. 5 is a top view of a novel three-stage expansion sleeve provided in an embodiment of the present utility model;

in the figure: 1. a primary sleeve; 2. a secondary sleeve; 3. a three-stage sleeve; 4. saw teeth; 5. a hand-held part; 6. an anti-skid slot.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1 to 5, the novel three-stage expansion sleeve comprises a first-stage sleeve 1, a second-stage sleeve 2 and a third-stage sleeve 3, wherein the first-stage sleeve 1 is sleeved in the second-stage sleeve 2, the second-stage sleeve 2 is sleeved in the third-stage sleeve 3, and the bottoms of the first-stage sleeve 1, the second-stage sleeve 2 and the third-stage sleeve 3 are of inverted truncated cone-shaped structures.

The bottom of the three-stage sleeve 3 is provided with a plurality of serrations 4 at regular intervals in the circumferential direction.

The top outer side surface of the three-stage sleeve 3 is provided with a hand-held part 5.

The tops of the outer side surfaces of the primary sleeve 1 and the secondary sleeve 2 are respectively provided with an anti-skid groove 6.

The length of the primary sleeve 1 is 163mm, the outer diameter is 6.8mm, the inner diameter is 1.4mm, and the length of the bottom of the inverted circular truncated cone-shaped structure is 10.3mm.

The length of the secondary sleeve 2 is 145mm, the outer diameter is 13.6mm, the inner diameter is 7mm, and the length of the bottom of the inverted circular truncated cone-shaped structure is 8mm.

The length of the three-stage sleeve 3 is 117mm, the outer diameter is 17mm, the inner diameter is 13.8mm, and the length of the bottom of the inverted circular truncated cone-shaped structure is 5mm.

When the novel three-stage expansion sleeve provided by the embodiment of the utility model is used, a P30 or P45 guide is arranged at the tail end of a mechanical arm of a robot according to the requirements of a robot prompt, the mechanical arm is commanded by the robot to automatically move to an operation part along a designed planning path, the first-stage sleeve 1 is placed into the skin of the operation part along the P30 or P45 guide to reach the skin of the operation part, the skin is cut into a small opening (about 1.5cm long), the first-stage sleeve 1 is inserted into a skin incision along the direction of the guide until the bone surface (the depth is about 5cm and the thickness of fatty muscle of a patient is different), a guide pin is placed along the first-stage sleeve 1, the depth is about 3cm, an operator fixes the first-stage sleeve 1, then sequentially placed into the second-stage sleeve 2 and the third-stage sleeve 3 along the outer side of the first-stage sleeve 1 to expand soft tissues, the second-stage sleeve 2 and the third-stage sleeve 3 are kept stable on the bone surface, the first-stage sleeve 1 is removed, a nail placement point opening is performed along the guide pin in the second-stage sleeve 2, a tapping assistant is held, the third-stage sleeve 3 is removed, the guide pin and the second-stage sleeve 2 is placed along the third-stage sleeve 3 to have proper specifications, and the operation is completed after the three-stage sleeve 3 is removed.

In summary, the novel three-stage expansion sleeve provided by the embodiment of the utility model only comprises three sleeves, so that the operation steps are simplified, and through the design of the tip sawtooth shape of the three-stage sleeve and the design of the tail end handle, the three-stage sleeve can be conveniently fixed on the bone surface to avoid sliding through the sawtooth edge after a working channel is prepared, and the hand-held part is convenient for an assistant to keep stable, so that the solid pedicle screw can be smoothly placed along the prepared working channel under the condition of not reserving a guide pin.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The novel three-level expansion sleeve is characterized by comprising a first-level sleeve (1), a second-level sleeve (2) and a third-level sleeve (3), wherein the first-level sleeve (1) is sleeved in the second-level sleeve (2), the second-level sleeve (2) is sleeved in the third-level sleeve (3), and the bottoms of the first-level sleeve (1), the second-level sleeve (2) and the third-level sleeve (3) are of inverted truncated cone structures;

the outer side surface of the top of the three-stage sleeve (3) is provided with a hand-held part (5).

2. A new three-stage expansion sleeve according to claim 1, characterized in that the bottom of the three-stage sleeve (3) is provided with a plurality of serrations (4) evenly spaced apart in the circumferential direction.

3. The novel three-stage expansion sleeve as claimed in claim 1, wherein the tops of the outer side surfaces of the primary sleeve (1) and the secondary sleeve (2) are respectively provided with an anti-skid groove (6).

4. A new three-stage expansion sleeve according to claim 1, characterized in that the length of the primary sleeve (1) is 163mm, the outer diameter is 6.8mm, the inner diameter is 1.4mm, and the length of the bottom of the inverted cone structure is 10.3mm.

5. A new three-stage expansion sleeve according to claim 1, characterized in that the length of the secondary sleeve (2) is 145mm, the outer diameter is 13.6mm, the inner diameter is 7mm, and the length of the bottom of the inverted cone-shaped structure is 8mm.

6. A new three-stage expansion sleeve according to claim 1, characterized in that the three-stage sleeve (3) has a length of 117mm, an outer diameter of 17mm, an inner diameter of 13.8mm and a length of 5mm of the bottom of the inverted cone-shaped structure.