Lower limb length measuring device for hip joint replacement
By designing a lower limb length measurement device for hip replacement surgery, the problem of different lengths of both lower limbs during surgery is solved, and accurate measurement and control of lower limb length is achieved, surgical complications are reduced and surgical satisfaction is improved.
Patent Information
- Application Number
- CN202420883469.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-26
AI Technical Summary
In hip replacement surgery, the lack of auxiliary measurement tools leads to varying lengths of both lower limbs, which may cause complications such as gait changes, prosthesis sinking and loosening, reducing surgical satisfaction.
Design a lower limb length measuring device, including a hemispherical positioner, connecting rod, T-shaped cannula, a circular panel angle controller and a tibial tuberculosis fixing ring. Through the combination and adjustment of these components, the accuracy of the lower limb length can be achieved. Measurement and control.
This device can easily and accurately measure the length of the lower limbs during surgery, ensuring the consistency of the length of both lower limbs, reducing surgical complications, and improving surgical satisfaction.
Smart Images
Figure CN222426020U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an instrument for assisting intraoperative positioning measurement in hospital orthopedic surgery, in particular to a lower limb length measuring device used for hip replacement. Background Art
[0002] At present, during clinical orthopedic hip replacement surgery, due to the lack of tools for auxiliary measurement during the operation, it is easy to cause a certain length deviation of the lower limbs, resulting in unequal lengths of the lower limbs, thus causing gait changes, causing complications such as premature sinking and loosening of the prosthesis, and reducing surgical satisfaction. Summary of the invention
[0003] The purpose of the utility model is to design a lower limb length measuring device for hip replacement, which can conveniently and accurately measure the length of the lower limbs during surgery, which is beneficial to accurately control the length of the lower limbs after hip replacement surgery, avoid unequal lengths of the two lower limbs, thereby reducing surgical complications and improving surgical satisfaction.
[0004] The technical solution of the utility model is: the lower limb length measuring device comprises: a hemispherical locator, a connecting rod, a T-shaped sleeve, a circular panel type angle controller, and a tibial tubercle fixing ring; the connecting rod is provided with a scale, the horizontal arm of the T-shaped sleeve is provided with a reading hole, and the circular panel type angle controller is provided with an angle display area; one end of the connecting rod is suspendedly sleeved with the hemispherical locator and fixed by bolts, the horizontal arm of the T-shaped sleeve is sleeved on the connecting rod and slides freely thereon, one end of the central axis of the circular panel type angle controller is inserted into the cantilever of the T-shaped sleeve and is movably connected by a pin so that the angle can be freely adjusted, and the tibial tubercle fixing ring is installed on the other end of the central axis of the circular panel type angle controller.
[0005] Furthermore, the diameter of the circular panel-type angle controller is smaller than the length of the connecting rod.
[0006] Furthermore, the connecting rod is a cylindrical rod with a scale, the length of which is 800 mm and the scale is 0-800 mm.
[0007] Furthermore, the diameter of the circular panel angle controller is 50 mm.
[0008] Furthermore, the angle display area of the circular panel angle controller is a left and right angle area, which is 0° to 180° respectively.
[0009] Furthermore, the length of the horizontal arm of the T-tube is 20 mm.
[0010] Before the operation: fix the hemispherical locator to the anterior superior iliac spine on the healthy side, and then fix the tibial tuberosity fixing ring to the tibial tuberosity on the healthy side; connect the circular panel angle controller to the tibial tuberosity fixing ring, and then connect the T-shaped sleeve to the circular panel angle controller, then pass the connecting rod through the T-shaped sleeve and connect it to the hemispherical locator and fix it with bolts; through the abduction or adduction of the T-shaped sleeve, make the connecting rod located at the 0° position of the circular panel angle controller, read the value through the reading hole of the T-shaped sleeve and record it; during the operation: the lower limb length measuring device is placed on the affected limb in the same way, and the length of the lower limb during hip replacement is adjusted according to the value read before the operation, so that both lower limbs reach the same value.
[0011] The utility model has the advantages of simple structure, low cost, easy operation, accurate positioning, improved surgical success rate and reduced surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] In the figure: 1 hemispherical positioner, 2 connecting rod, 3 T-shaped sleeve, 4 round panel angle controller, 5 tibial tubercle fixing ring, 6 bolt, 201 scale, 301 reading hole, 401 angle display area. DETAILED DESCRIPTION
[0014] The utility model will be further described below in conjunction with the accompanying drawings.
[0015] like Figure 1 As shown, the lower limb length measuring device includes: a hemispherical locator 1, a connecting rod 2, a T-shaped sleeve 3, a circular panel-type angle controller 4, and a tibial tubercle fixing ring 5; a scale 201 is provided on the connecting rod 2, a reading hole 301 is provided on the horizontal arm of the T-shaped sleeve 3, and an angle display area 401 is provided on the circular panel-type angle controller 4; one end of the connecting rod 2 is suspendedly sleeved with the hemispherical locator 1 and fixed by a bolt 6, the horizontal arm of the T-shaped sleeve 3 is sleeved on the connecting rod 2 and slides freely thereon, one end of the central axis of the circular panel-type angle controller 4 is inserted into the cantilever of the T-shaped sleeve 3 and is movably connected by a pin so that it can freely adjust the angle, and the tibial tubercle fixing ring 5 is installed on the other end of the central axis of the circular panel-type angle controller 4.
[0016] Furthermore, the diameter of the circular panel-type angle controller 4 is smaller than the length of the connecting rod 2 .
[0017] Furthermore, the connecting rod 2 is a cylinder with a scale 201, a length of 800 mm, and a scale of 0-800 mm.
[0018] Furthermore, the diameter of the circular panel-type angle controller 4 is 50 mm.
[0019] Furthermore, the angle display area 401 of the circular panel-type angle controller 4 is a left and right angle area, which is 0° to 180° respectively.
[0020] Furthermore, the length of the horizontal arm of the T-shaped sleeve 3 is 20 mm.
[0021] Before the operation: fix the hemispherical locator 1 to the anterior superior iliac spine on the healthy side, and then fix the tibial tubercle fixing ring 5 to the tibial tubercle on the healthy side; connect the circular panel angle controller 4 to the tibial tubercle fixing ring 5, and then connect the T-shaped sleeve 3 to the circular panel angle controller 4, then pass the connecting rod 2 through the T-shaped sleeve 3 and connect it to the hemispherical locator 1 and fix it with bolts 6; through the abduction or adduction of the T-shaped sleeve 3, make the connecting rod located at the 0° position of the circular panel angle controller, read the value through the reading hole of the T-shaped sleeve 3 and record it; during the operation: the lower limb length measuring device is placed on the affected limb in the same way, and the length of the lower limb during hip replacement is adjusted according to the value read before the operation, so that both lower limbs reach the same value.
Claims
1. A device for measuring the length of lower limbs for hip replacement, characterized in that The lower limb length measuring device comprises: a hemispherical locator (1), a connecting rod (2), a T-shaped sleeve (3), a circular panel-type angle controller (4), and a tibial tubercle fixing ring (5); a scale (201) is provided on the connecting rod (2), a reading hole (301) is provided on the horizontal arm of the T-shaped sleeve (3), and an angle display area (401) is provided on the circular panel-type angle controller (4); one end of the connecting rod (2) is suspendedly sleeved with the hemispherical locator (1) and fixed by a bolt (6), the horizontal arm of the T-shaped sleeve (3) is sleeved on the connecting rod (2) and freely slides thereon, one end of the central axis of the circular panel-type angle controller (4) is inserted into the cantilever of the T-shaped sleeve (3) and is movably connected by a pin so that the angle can be freely adjusted, and the tibial tubercle fixing ring (5) is installed on the other end of the central axis of the circular panel-type angle controller (4).
2. The device for measuring the length of lower limbs for hip replacement according to claim 1, characterized in that: The diameter of the circular panel-type angle controller (4) is smaller than the length of the connecting rod (2).
3. The device for measuring the length of lower limbs for hip replacement according to claim 1, characterized in that: The connecting rod (2) is a cylinder with a scale (201) having a length of 800 mm and a scale of 0-800 mm.
4. The device for measuring the length of lower limbs for hip replacement according to claim 1, characterized in that: The diameter of the circular panel-type angle controller (4) is 50 mm.
5. The device for measuring the length of lower limbs for hip replacement according to claim 1, characterized in that: The angle display area (401) of the circular panel-type angle controller (4) is a left and right angle area, which are 0° to 180° respectively.
6. The device for measuring the length of lower limbs for hip replacement according to claim 1, characterized in that: The length of the horizontal arm of the T-shaped sleeve (3) is 20 mm.