Acetabular posterior rim bone pry for total hip replacement surgery
By designing a posterior edge bone pry for total hip replacement surgery, the problem that existing tools cannot fully expose the acetabular, the full and safe exposure of the acetabular is achieved, and the safety of the surgery and the convenience of operation are improved.
Patent Information
- Application Number
- CN202420409717.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-04
AI Technical Summary
Existing tools cannot fully expose the acetabular during total hip replacement surgery, and are inconvenient to use and insufficient safety.
A bone prying at the posterior edge of the acetabular is designed, including the bone tip, the bone tip and the bone tip. The bone tip is trumpet-shaped, the bone tip is long and arc-shaped, and the bone tip is 316 medical stainless steel. The design of these structures achieves full exposure of the acetabular.
The full and safe exposure of the acetabular is achieved, the labor and uneven force are reduced during the operation, and the safety of the operation and the convenience of operation are improved.
Smart Images
Figure CN222693425U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a posterior rim bone pry of the acetabulum used in total hip replacement surgery. Background Art
[0002] In total hip replacement surgery, fully exposing the acetabulum is the basis for a successful operation. Only when the acetabulum is fully exposed can the surgeon correctly identify the important anatomical structures of the acetabulum, correctly identify the key surgical markers during the operation, and thus standardize and correctly complete the operation. In the process of exposing the acetabulum, retractor traction is currently the most important method. However, although the existing tools such as the "square-headed retractor" are wide in the front and conducive to exposure, they cannot be fixed on the bone surface due to the blunt tip, and the traction process is relatively laborious. At the same time, uneven force may lead to excessive traction, which may damage the sciatic nerve behind the joint, and safety cannot be effectively guaranteed. Although the "Hoffman retractor" in the existing tools can be inserted into the bone in the front, the front bone arm is relatively narrow, generally 10-15mm, and the purpose of full exposure cannot be achieved. Therefore, a tool that can fully and safely expose the acetabulum and save effort for the surgeon and is convenient and easy to operate is an urgent need for total hip replacement surgery. Utility Model Content
[0003] In view of the problem that the prior art cannot fully expose the acetabulum, the utility model aims to provide a posterior rim bone pry of the acetabulum for total hip replacement surgery which is easy to operate, highly safe and can fully expose the acetabulum.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a posterior edge bone pry of acetabulum for total hip replacement surgery, comprising a bone tip, a bone arm and a bone handle which are connected to each other as a whole, characterized in that: the bone arm is in a long arc shape, the bone tip is in a trumpet shape which is wide on the left and narrow on the right, the arc edge at the left end of the bone arm is connected to the bone handle in a slope shape, and the arc edge at the right end of the bone arm is connected to the bone tip in a slope shape.
[0005] The arc diameter of the bone tilting arm of the utility model is 45-55mm.
[0006] The width of the tip of the bone tip of the utility model is 3-5mm.
[0007] The bone hook of the utility model is in an arc shape, and the width of the hook head of the bone hook is 30-50mm.
[0008] The bone lift handle of the utility model is made of 316 medical stainless steel. Beneficial Effects
[0009] Since the bone tip is designed to be a trumpet shape that is wide on the left and narrow on the right, it is convenient for the bone tip to be inserted into the bone surface of the posterior edge of the acetabulum; the shape of the bone tip is designed to be a long arc, and the arc edges at both ends of the bone tip are sloped and connected to the bone tip and the bone tip respectively, which can increase the contact area between the bone tip and the soft tissue around the acetabulum, and achieve the purpose of fully and safely exposing the acetabulum. The bone tip described in the utility model is relatively wide, and its arc diameter reaches 45-55mm, which can increase the force of the bone tip and make it less likely to deform when subjected to force. After the bone tip hook is designed to be an arc, the bone tip can provide support for the surgeon to hold it and prevent it from slipping out of the hand. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic structural diagram of the posterior edge of the acetabulum bone pry described in the utility model.
[0011] Figure 2 It is a front view schematic diagram of the posterior edge of the acetabulum bone pry described in the utility model.
[0012] Figure 3 It is a side view schematic diagram of the posterior edge of the acetabulum bone pry described in the utility model.
[0013] Figure 4 It is a top view schematic diagram of the posterior edge of the acetabulum bone pry described in the utility model.
[0014] Figure 5 It is a left side schematic diagram of the posterior edge of the acetabulum bone pry described in the utility model.
[0015] In the picture, 1-bone tip, 2-bone arm, 3-bone handle, 4-bone hook. DETAILED DESCRIPTION
[0016] The utility model discloses a posterior acetabular bone pry for total hip replacement surgery, comprising a bone tip 1, a bone arm 2 and a bone handle 3 connected to each other, the bone handle 3 is made of 316 medical stainless steel, the arc diameter of the bone arm 2 is 50 mm, and the hook width of the bone hook 4 is 40 mm. The bone arm 2 is in the shape of a long strip of arc, the arc edge of the right end of the bone arm 2 is connected to the bone tip 1 in a sloped shape, and the arc edge of the left end of the bone arm 2 is connected to the bone handle 3 in a sloped shape. During total hip replacement surgery, when the acetabulum needs to be exposed after the hip joint capsule is cut open and the femoral head is removed, the surgeon holds the bone lift handle 3 described in the utility model, inserts the bone lift arm 2 into the hip joint, and inserts the bone lift tip 1 into the bone surface of the posterior edge of the acetabulum. The surgeon can hold the bone lift handle 3 and apply appropriate force to press down. The trumpet-shaped bone lift tip 1, which is wider on the left and narrower on the right, can safely and stably contact the bone surface of the posterior edge. The long arc-shaped bone lift arm 2 can pull the muscle and soft tissue of the posterior edge of the acetabulum backwards to fully, safely and labor-savingly expose the posterior wall of the acetabulum. The arc-shaped bone lift hook 4 can prevent the hand from slipping backwards.
Claims
1. A posterior rim bone pry for acetabulum used in total hip replacement surgery, comprising a bone lift tip (1), a bone lift arm (2), a bone lift handle (3) and a bone lift hook (4) which are connected to each other as one body, characterized in that: The bone lift arm (2) is in the shape of an elongated circular arc, and the circular arc diameter of the bone lift arm (2) is 45-55 mm; the bone lift tip (1) is in the shape of a trumpet that is wider on the left and narrower on the right; the bone lift hook (4) is in the shape of a circular arc, and the width of the hook head of the bone lift hook (4) is 30-50 mm; the circular arc edge at the left end of the bone lift arm (2) is in the shape of a slope and connected to the bone lift handle (3), and the circular arc edge at the right end of the bone lift arm (2) is in the shape of a slope and connected to the bone lift tip (1).
2. The acetabular posterior rim bone pry for total hip replacement surgery according to claim 1, characterized in that: The width of the tip of the bone tip (1) is 3-5 mm.
3. The acetabular posterior rim bone pry for total hip replacement surgery according to claim 1, characterized in that: The bone lift handle (3) is made of 316 medical stainless steel.