Vertebral biopsy device for osteoporotic patients

Abstract

The utility model relates to medical auxiliary device technical field especially is a kind of vertebral bone biopsy device of osteoporosis patient. The utility model includes the puncture needle cylinder being set along up-down length direction, the cutting assembly for cutting off the bone tissue front end placed in the front part of puncture needle cylinder and being arranged on puncture needle cylinder and for the bone tissue of front part in puncture needle cylinder is discharged from the front end of puncture needle cylinder discharge assembly. The device is aimed at the bone tissue in the vertebral body of osteoporosis patient as high as possible is taken out.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a vertebral biopsy device for osteoporosis patients. Background Technology

[0002] During a vertebral biopsy, a hollow needle is inserted into the vertebral body to remove bone tissue. However, in clinical practice, due to differences in patient constitution, patients with osteoporosis often have low bone content, making it difficult to ensure that the needle tip is completely filled with bone tissue after insertion. As a result, bone tissue is not retained in the needle after it is withdrawn, leading to a low biopsy rate. Utility Model Content

[0003] To address the aforementioned problems, the present invention aims to provide a vertebral biopsy device for osteoporosis patients, which is designed to extract bone tissue from the vertebrae of osteoporosis patients as efficiently as possible.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A vertebral biopsy device for osteoporosis patients includes a puncture needle barrel arranged along its vertical length, a cutting component disposed on the puncture needle barrel for cutting the front end of bone tissue placed in the front part of the puncture needle barrel, and a discharge component disposed on the puncture needle barrel for discharging the bone tissue in the front part of the puncture needle barrel from the front end of the puncture needle barrel.

[0006] The cutting assembly includes a placement annular groove located at the front of the inner wall of the puncture needle barrel; a pair of elastic cutting elements respectively located on the left and right sides of the placement annular groove and rotatably connected to the inner wall of the placement annular groove at both ends; a pair of sliding grooves extending vertically through the rear end of the puncture needle barrel and located on the side of the elastic cutting elements away from the central axis of the puncture needle barrel; a pair of pulling bands corresponding to each elastic cutting element and fixed on the side of the corresponding elastic cutting element away from the central axis of the puncture needle barrel, with the rear end placed in the corresponding sliding groove; an operating sleeve fixedly sleeved at the rear end of the puncture needle barrel; a pair of tightening sub-assemblies respectively located on the left and right sides of the operating sleeve for housing the corresponding elastic cutting elements in the placement annular groove; and a pair of pre-tightening sub-assemblies located on the left and right sides of the front of the operating sleeve for driving the corresponding elastic cutting elements to fit towards the central axis of the puncture needle barrel.

[0007] More preferably, each tightening sub-assembly includes a rotating groove located on the corresponding side of the operating sleeve and a rotating plate rotatably located in the rotating groove along the up-down direction of the puncture needle.

[0008] The upper end of each pull belt extends into the operating sleeve and is fixedly connected to the upper end of the inner wall of the corresponding side rotating plate.

[0009] More preferably, each pre-tightening sub-assembly includes a sliding rail disposed on the corresponding side of the operating sleeve along the vertical height direction of the puncture needle, a sliding member movably disposed in the sliding rail, and a tightening strip whose upper end is fixedly connected to the inner wall of the sliding member and whose lower part is disposed in the corresponding elastic cutting member along the length direction of the corresponding elastic cutting member.

[0010] The middle section of each tightening bar is movably positioned between the inner walls of the puncture needle along the vertical direction of the puncture needle, and the lower end of each tightening bar is fixedly connected to the rear end of the corresponding elastic cutting component.

[0011] More preferably, a limiting rotating plate is rotatably connected to the left side of the left sliding track in front of the operating sleeve, and an elastic slot is provided in front of the right sliding track in front of the operating sleeve, and a connecting column is fixedly provided at the free end of the limiting rotating plate.

[0012] More preferably, the discharge assembly includes a fixed plate fixed to the upper part of the operating sleeve, a discharge column movably disposed in the puncture needle along the vertical height direction and extending above the fixed plate, a discharge push plate fixed to the front end of the discharge column, a pressing column fixed to the upper end of the discharge column, and a plurality of reset springs disposed between the pressing column and the fixed plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model uses a cutting component to cut the bone tissue after it is placed in the puncture needle. The component then moves the elastic cutting parts on both sides to fit tightly against the central axis of the puncture needle, thereby cutting the lower connection of the bone tissue. The puncture channel below the cut bone tissue in the puncture needle is blocked by the pulling band and the elastic cutting parts, leaving the bone tissue inside the puncture needle. This allows for the efficient removal of bone tissue from the vertebral body of osteoporosis patients.

[0015] 2. This utility model uses a discharge assembly to push the bone tissue out of the lower end of the puncture needle after the bone tissue is removed from the vertebral body, thereby preventing the bone tissue from remaining in the puncture needle as much as possible.

[0016] 3. This utility model applies a pre-tightening contraction force towards the central axis of the puncture needle to the two elastic cutting members that are deformed and housed in the placement ring groove through the pre-tightening sub-assembly. This allows the elastic cutting members on both sides to deform and fit together towards the central axis of the puncture needle as quickly as possible when they lose their restraint, thereby achieving the effect of cutting off the bone tissue connection as quickly as possible. Attached Figure Description

[0017] Figure 1 This is an overall exploded view of the present invention;

[0018] Figure 2This is a partial enlarged view of point A in this utility model;

[0019] Figure 3 This is an overall axonometric view of the present invention;

[0020] Figure 4 This is a vertical sectional view of the upper part of the present invention;

[0021] Figure 5 This is a transverse sectional view of a cutting component according to the present invention;

[0022] Figure 6 This is an isolated axonometric view of a preload subassembly according to the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of this utility model in a usage state;

[0024] Figure 8 This is a schematic diagram of the structure of the present invention in a second usage state;

[0025] Figure 9 This is a schematic diagram of the three-dimensional structure of this utility model in use.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Puncture syringe; 2. Cutting assembly; 21. Placement ring groove; 22. Elastic cutting element; 23. Sliding groove; 24. Pulling belt; 25. Operating sleeve; 26. Tightening sub-assembly; 261. Rotating groove; 262. Rotating plate; 27. Pre-tightening sub-assembly; 271. Sliding track; 272. Sliding element; 273. Tightening strip; 3. Discharge assembly; 31. Fixing plate; 32. Discharge column; 33. Discharge push plate; 34. Pressing column; 35. Return spring; 4. Limiting rotating plate; 5. Elastic groove; 6. Connecting column; B. Bone tissue. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 As shown, the osteoporosis patient vertebral biopsy device of this embodiment includes a puncture needle 1 arranged along the vertical length direction, a cutting component 2 disposed on the puncture needle 1 and used to cut the front end of the bone tissue B placed in the front part of the puncture needle 1, and a discharge component 3 disposed on the puncture needle 1 and used to discharge the bone tissue B in the front part of the puncture needle 1 from the front end of the puncture needle 1.

[0030] The cutting assembly 2 includes a placement annular groove 21 located at the front of the inner wall of the puncture needle barrel 1; a pair of elastic cutting elements 22 respectively located on the left and right sides of the placement annular groove 21 and rotatably connected to the inner wall of the placement annular groove 21 at both ends; a pair of sliding grooves 23 extending vertically through the rear end of the puncture needle barrel 1 and located on the side of the elastic cutting elements 22 away from the central axis of the puncture needle barrel 1; a pair of pulling bands 24 corresponding to each elastic cutting element 22 and fixed on the side of the corresponding elastic cutting element 22 away from the central axis of the puncture needle barrel 1, with the rear end placed in the corresponding sliding groove 23; an operating sleeve 25 fixedly sleeved at the rear end of the puncture needle barrel 1; a pair of tightening sub-assemblies 26 respectively located on the left and right sides of the operating sleeve 25 and used to house the corresponding elastic cutting elements 22 in the placement annular groove 21; and a pair of pre-tightening sub-assemblies 27 located on the left and right sides of the front of the operating sleeve 25 and used to drive the corresponding elastic cutting elements 22 to fit towards the central axis of the puncture needle barrel 1.

[0031] When using this product, the lower end of the puncture needle 1 is inserted into the patient's vertebral body, so that bone tissue B is placed inside the puncture needle 1. Figure 7 As shown, the operator then loosens the tightening sub-assembly 26, causing the elastic cutting element 22 to deform and conform to each other along the central axis of the puncture needle 1, thereby cutting the lower end connection of the bone tissue B, as shown. Figures 8 to 9 As shown, simultaneously, due to the deformation of the elastic cutting member 22, the pulling band 24 is stretched into the puncture needle 1, thereby shielding the cut bone tissue B from the elastic cutting member 22 and the lower part of the pulling band 24, thus supporting and retaining the cut bone tissue B within the puncture needle 1 as much as possible. Figure 9 As shown, the puncture needle 1 is then pulled outwards to cut and remove the bone tissue B.

[0032] like Figure 1 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 9 As shown, each tightening sub-assembly 26 includes a rotating groove 261 located on the corresponding side of the operating sleeve 25 and a rotating plate 262 rotatably disposed in the rotating groove 261 along the up-down direction of the puncture needle cylinder 1.

[0033] The upper end of each pull belt 24 extends into the operating sleeve 25 and is fixedly connected to the upper end of the inner wall of the corresponding side rotating plate 262.

[0034] When using this product, hold the operating sleeve 25 and press down the lower end of the rotating plates 262 on both sides with your palm. This will cause the upper end of the rotating plates 262 on both sides to rotate upward, which will cause the upper end of the corresponding side pull belt 24 to be stretched upward. This will cause the lower end of the pull belt 24 to deform and bend the middle section of the corresponding side elastic cut-off piece 22 towards the inner wall of the corresponding side of the mounting ring groove 21 and be housed in the mounting ring groove 21.

[0035] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, each pre-tightening sub-assembly 27 includes a sliding rail 271 located on the corresponding side of the operating sleeve 25 along the vertical height direction of the puncture needle cylinder 1, a sliding member 272 movably located in the sliding rail 271, and a tightening strip 273 whose upper end is fixedly connected to the inner wall of the sliding member 272 and whose lower part is located in the corresponding elastic cutting member 22 along the length direction of the corresponding elastic cutting member 22.

[0036] The middle section of each tightening bar 273 is movably disposed between the inner walls of the puncture needle cylinder 1 along the vertical height direction, and the lower end of each tightening bar 273 is fixedly connected to the rear end of the corresponding elastic cutting member 22.

[0037] When using this product, push the two sliding parts 272 upwards, so that the two sliding parts 272 drive the upper end of the tightening strip 273 to move upwards, thereby stretching the middle section of the tightening strip 273, causing the tightening strip 273 to apply a tightening force to the corresponding elastic cutting part 22 in the direction of the central axis of the puncture needle 1.

[0038] like Figure 1 and Figure 2 As shown, the operating sleeve 25 is rotatably connected to the left side of the left sliding rail 271 and has a limiting plate 4 in front of it. The operating sleeve 25 is located on the right side of the right sliding rail 271 and has an elastic groove 5 in front of it. The free end of the limiting plate 4 is fixed with a connecting column 6.

[0039] When in use, this product rotates the limiting plate 4 to insert the connecting post 6 into the elastic slot 5, causing the upper side of the limiting plate 4 to support the lower side of the sliding parts 272 on both sides, thereby limiting the height of the sliding parts 272.

[0040] like Figure 1 , Figure 3 and Figure 4 As shown, the discharge assembly 3 includes a fixed plate 31 fixed in the upper part of the operating sleeve 25, a discharge column 32 movably disposed in the puncture needle 1 along the vertical height direction and extending above the fixed plate 31, a discharge push plate 33 fixed at the front end of the discharge column 32, a pressing column 34 fixed at the upper end of the discharge column 32, and a plurality of reset springs 34 disposed between the pressing column 34 and the fixed plate 31.

[0041] When using this product, pressing the pressing column 34 causes the discharge push plate 33 to move downwards, pushing the bone tissue B in the lower part of the puncture needle 1 out from the lower end of the puncture needle 1. When the pressing column 34 is released, the return spring 35 moves it back to its original position and upwards.

[0042] The working principle of this device is as follows:

[0043] Step 1: Hold the operating sleeve 25 and press down the lower end of the rotating plates 262 on both sides with your palm. This will cause the upper end of the rotating plates 262 on both sides to rotate upward. This will cause the upper end of the corresponding side pull belt 24 to be stretched upward. As a result, the lower end of the pull belt 24 will cause the middle section of the corresponding side elastic cut-off piece 22 to deform and bend towards the inner wall of the corresponding side of the mounting annular groove 21 and be housed in the mounting annular groove 21.

[0044] Step 2: Push the two sliding parts 272 upwards, so that the two sliding parts 272 drive the upper end of the tightening strip 273 to move upwards, thereby stretching the middle section of the tightening strip 273. This causes the tightening strip 273 to apply a tightening force to the corresponding elastic cutting part 22 in the direction of the central axis of the puncture needle 1. Then, hold the connecting column 6 and snap it into the elastic slot 5, so that the upper side of the limiting rotating plate 4 supports the lower side of the two sliding parts 272, maintaining the position height of the sliding parts 272.

[0045] Step 3: Insert the lower end of the puncture needle 1 into the patient's vertebral body, so that bone tissue B is placed inside the puncture needle 1, such as... Figure 7 As shown, the operator then releases the pressure on the rotating plate 262, causing the elastic cutting element 22 to deform and conform to each other towards the central axis of the puncture needle cylinder 1 under the tension of the tightening strip 273, thereby cutting off the lower end connection of the bone tissue B, as shown. Figures 8 to 9 As shown, simultaneously, due to the deformation of the elastic cutting member 22, the pulling band 24 is stretched into the puncture needle 1, thereby shielding the cut bone tissue B from the elastic cutting member 22 and the lower part of the pulling band 24, thus supporting and retaining the cut bone tissue B within the puncture needle 1 as much as possible. Figure 9 As shown, the puncture needle 1 is then pulled outwards.

[0046] Step 4: Hold the operating sleeve 25 again and press down the lower end of the rotating plates 262 on both sides with your palm, so that the elastic cutting parts 22 on both sides are put back into the corresponding positions in the placement ring groove 21, so that the bone tissue B loses the support of the elastic cutting parts 22 and the pulling band 24, and the bone tissue B falls from the lower end of the puncture needle 1.

[0047] Step 5: By pressing the pressing column 34, the discharge column 32 is driven to move downward, causing the discharge push plate 33 to push the bone tissue B placed in the lower part of the puncture needle 1 towards the lower opening of the puncture needle 1, thereby discharging the bone tissue B out of the puncture needle 1 for collection. After releasing the pressing column 34, the discharge push plate 33 is driven to move upward under the action of the return spring 35, returning to its original position.

[0048] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for vertebral biopsy in patients with osteoporosis, characterized in that: It includes a puncture needle (1) arranged along the vertical length direction, a cutting component (2) disposed on the puncture needle (1) and used to cut the front end of the bone tissue placed in the front part of the puncture needle (1), and a discharge component (3) disposed on the puncture needle (1) and used to discharge the bone tissue in the front part of the puncture needle (1) from the front end of the puncture needle (1). The cutting assembly (2) includes a mounting annular groove (21) located on the lower part of the inner wall of the puncture needle cylinder (1), a pair of elastic cutting elements (22) respectively located on the left and right sides of the mounting annular groove (21) and rotatably connected to the inner wall of the mounting annular groove (21) at both ends, a pair of sliding grooves (23) extending through the upper end of the puncture needle cylinder (1) along the vertical direction and located on the side of the elastic cutting elements (22) away from the central axis of the puncture needle cylinder (1), and a pair of sliding grooves fixed to the corresponding elastic cutting elements (22) in a one-to-one correspondence. A pulling band (24) is provided on one side of the central axis of the puncture needle (1) and the upper part is placed in the corresponding sliding groove (23); an operating sleeve (25) is fixedly sleeved on the rear end of the puncture needle (1); a pair of tightening sub-assemblies (26) are respectively provided on the left and right sides of the operating sleeve (25) and used to house the corresponding elastic cutting element (22) in the placement ring groove (21); and a pair of pre-tightening sub-assemblies (27) are provided on the left and right sides of the front of the operating sleeve (25) and used to drive the corresponding elastic cutting element (22) to fit towards the central axis of the puncture needle (1).

2. The vertebral biopsy device for osteoporosis patients according to claim 1, characterized in that: Each tightening sub-assembly (26) includes a rotating groove (261) located on the corresponding side of the operating sleeve (25) and a rotating plate (262) located in the rotating groove (261) and rotating in the up-down direction of the puncture needle (1); The upper end of each pull belt (24) extends into the operating sleeve (25) and is fixedly connected to the upper end of the inner wall of the corresponding side rotating plate (262).

3. The vertebral biopsy device for osteoporosis patients according to claim 2, characterized in that: Each pre-tightening sub-assembly (27) includes a sliding rail (271) located on the side of the operating sleeve (25) along the vertical height direction of the puncture needle (1), a sliding member (272) movably located in the sliding rail (271), and a tightening strip (273) whose upper end is fixedly connected to the inner wall of the sliding member (272) and whose lower part is located in the corresponding elastic cutting member (22) along the length direction of the corresponding elastic cutting member (22). The middle section of each tightening bar (273) is movably disposed between the inner walls of the puncture needle (1) along the vertical height direction, and the lower end of each tightening bar (273) is fixedly connected to the rear end of the corresponding elastic cutting member (22).

4. The vertebral biopsy device for osteoporosis patients according to claim 3, characterized in that: The operating sleeve (25) is rotatably connected to the left side of the left sliding rail (271) and a limiting plate (4) is provided in front of it. The operating sleeve (25) is located on the right side of the right sliding rail (271) and an elastic groove (5) is provided in front of it. A connecting column (6) is fixed at the free end of the limiting plate (4).

5. The vertebral biopsy device for osteoporosis patients according to claim 1, characterized in that: The discharge assembly (3) includes a fixed plate (31) fixed in the upper part of the operating sleeve (25), a discharge column (32) movably disposed in the puncture needle (1) along the vertical height direction and extending above the fixed plate (31), a discharge push plate (33) fixed at the front end of the discharge column (32), a pressing column (34) fixed at the upper end of the discharge column (32), and several return springs (35) disposed between the pressing column (34) and the fixed plate (31).

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