Orthopedic biopsy drill front end connection device

Abstract

This utility model discloses a front-end connection device for an orthopedic biopsy drill, including a bayonet connector, a connecting block, a sampling chamber, and a guide sleeve. The bayonet connector is a hollow structure. One end of the bayonet connector is connected to the connecting block, and the end of the connecting block away from the bayonet connector is connected to the sampling chamber. The end of the sampling chamber away from the connecting block is connected to the guide sleeve. A drill bit can be inserted into the guide sleeve of the bayonet connector. The other end of the bayonet connector can be engaged with the biopsy drill. The drill bit can pass through the guide sleeve, the sampling chamber, and the connecting block and then connect with the biopsy drill. The bayonet connector of this utility model, through the design of the claws and protrusions, makes the connection with the biopsy drill simpler and faster. The sampling chamber has a funnel-shaped structure and is equipped with a mesh plate inside, which can effectively collect the drilled material while preventing larger debris from entering the negative pressure pipeline, thus improving the efficiency and accuracy of sampling.

Description

Technical Field

[0001] This utility model relates to the field of biopsy drill technology, specifically to a front-end connection device for orthopedic biopsy drills. Background Technology

[0002] In orthopedic surgery, a biopsy drill is a commonly used medical instrument used to extract samples from bone for pathological examination. Traditional orthopedic biopsy drills mostly use negative pressure suction via a vacuum bulb or vacuum aspirator to collect samples, but this method is inconvenient when directly drilling into the bone. Utility Model Content

[0003] Therefore, this utility model provides a front-end connection device for orthopedic biopsy drills to solve the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The orthopedic biopsy drill front-end connection device includes a bayonet connector, a connecting block, a sampling chamber, and a guide sleeve. The bayonet connector is a hollow structure. One end of the bayonet connector is connected to the connecting block, and the end of the connecting block away from the bayonet connector is connected to the sampling chamber. The end of the sampling chamber away from the connecting block is connected to the guide sleeve. A drill bit can be inserted into the guide sleeve of the bayonet connector. The other end of the bayonet connector can be engaged with the biopsy drill. The drill bit can pass through the guide sleeve, the sampling chamber, and the connecting block and then connect with the biopsy drill.

[0006] Furthermore: the bayonet connector includes a connecting plate, a side support sleeve, a limiting ring, claws, and protrusions. A third through hole is provided at the center of the connecting plate. A hollow side support sleeve is provided at the end of the connecting plate away from the connecting block, and an observation window is provided on the side support sleeve. A limiting ring is provided above the side support sleeve, and several claws are provided at the end of the limiting ring away from the side support sleeve. Protrusions are provided on the inner wall of the claws, and the claws can be locked onto the biopsy drill.

[0007] Furthermore: the third through hole allows the drill bit to pass through; the connecting plate and the connecting block are connected together by a threaded connection.

[0008] Furthermore: the connecting block includes an outer sleeve, a middle partition, and a central guide sleeve. The middle partition is fixed in the middle of the outer sleeve and parallel to the end face of the outer sleeve. A central guide sleeve is provided at the center of the middle partition, which passes through the middle partition and has a circular through hole for the drill bit to pass through. The inner walls of the outer sleeve on both sides of the partition are provided with internal threads, and the outer sleeve is connected to the first external threaded part by means of threaded connection.

[0009] Furthermore: the sampling chamber includes a cover, a mesh plate and a support sleeve. One end of the cover is provided with a second external thread, which is connected to the outer sleeve by a threaded connection. The end of the cover away from the second external thread is provided with a tube. The tube, the cover and the second external thread are all made of the same material. The side wall of the cover is provided with an interface pipe that can connect to the inside of the cover. The interface pipe is connected to a negative pressure pipe.

[0010] The perforated plate is installed inside the cover. A support sleeve is provided at the center of the perforated plate. The support sleeve can be connected to the central guide sleeve. A first through hole is provided at the center of the support sleeve, which allows the drill bit to pass through. Several second through holes are evenly distributed on the perforated plate. The diameter of the second through holes is smaller than the diameter of the first through holes.

[0011] Furthermore: the cover has a funnel-shaped structure and is made of transparent material.

[0012] Furthermore: the guide sleeve includes a plug and a tube body, with a plug at one end of the tube body, the plug being able to be inserted into the insert.

[0013] Furthermore: the drill bit includes a drill body and a spiral blade, the drill bit can pass through the guide sleeve, the spiral blade is spirally wound on the drill body and connected to the tip of the drill body.

[0014] Furthermore: a support protrusion is provided in the middle of the inner wall of the cover, and the mesh plate contacts the support protrusion; the interface tube is provided on the side wall of the cover between the support protrusion and the second external thread.

[0015] Furthermore: the outer walls of several of the aforementioned claws are designed to be arc-shaped, and the several claws can form an intermittent circular structure. Threads are provided on the outer walls of the claws, and a nut is connected to the outer threads of the several claws.

[0016] This utility model has the following advantages: the bayonet connector, with its claw and protrusion design, makes the connection with the biopsy drill simpler and faster; the threaded connection design between the connecting block, sampling chamber, and guide sleeve makes the entire device easy to assemble and disassemble, and convenient for cleaning and disinfection; the sampling chamber has a funnel-shaped structure and is equipped with a mesh plate inside, which can effectively collect the drilled material while preventing larger debris from entering the negative pressure pipeline, thus improving the accuracy and efficiency of sampling.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0018] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0019] Figure 1 A perspective view of an orthopedic biopsy drill front-end connection device provided in one embodiment of this application.

[0020] Figure 2 This is a partial cross-sectional structural diagram of the orthopedic biopsy drill front-end connection device of this utility model.

[0021] Figure 3 This is a perspective view of the perforated plate in the front-end connection device of the orthopedic biopsy drill of this utility model.

[0022] Figure 4 This is a schematic diagram of the sampling chamber in the front-end connection device of the orthopedic biopsy drill of this utility model.

[0023] In the picture:

[0024] 1. Bayonet connector; 101. Connecting plate; 102. Side support sleeve; 103. Observation window; 104. Limiting ring; 105. Claw; 106. Protrusion; 107. Third through hole;

[0025] 2. Connecting block; 201. Intermediate partition plate; 202. Outer sleeve; 203. Central guide sleeve;

[0026] 3. Sampling chamber; 301. Cover; 302. Mesh plate; 303. Support sleeve; 304. First through hole; 305. Second through hole; 306. Interface tube; 307. Support protrusion; 308. Second external thread; 309. Insert tube;

[0027] 4. Guide sleeve; 401. Pipe body; 402. Plug;

[0028] 5. Drill bit; 501. Drill body; 502. Spiral blade. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. It should be understood that these embodiments are merely for further explanation of this utility model and should not be construed as limiting the scope of protection of this utility model. Technical engineers in the field can make some non-essential improvements and adjustments to this utility model based on the above-described content. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Please see Figures 1-4 The orthopedic biopsy drill front-end connection device includes a bayonet connector 1, a connecting block 2, a sampling chamber 3, and a guide sleeve 4. The bayonet connector 1 is a hollow structure. One end of the bayonet connector 1 is connected to the connecting block 2. The end of the connecting block 2 away from the bayonet connector 1 is connected to the sampling chamber 3. The end of the sampling chamber 3 away from the connecting block 2 is connected to the guide sleeve 4. A drill bit 5 can be inserted into the guide sleeve 4.

[0031] The bayonet connector 1 includes a connecting plate 101, a side support sleeve 102, a limiting ring 104, claws 105, and protrusions 106. The connecting plate 101 has a third through hole 107 at its center, through which the drill bit 5 can pass. The connecting plate 101 and the connecting block 2 are connected together by a threaded connection. The end of the connecting plate 101 away from the connecting block 2 has a hollow side support sleeve 102. The side support sleeve 102 has an observation window 103, which allows observation of the connection between the drill bit 5 and the orthopedic biopsy drill. The observation window 103 can also be used to connect or disconnect the drill bit 5 from the orthopedic biopsy drill. The side support sleeve 102 has a limiting ring 104 above it. The end of the limiting ring 104 away from the side support sleeve 102 has several claws 105. The inner wall of the claws 105 has protrusions 106, which can be locked onto the biopsy drill.

[0032] When in use, the limiting ring 104 can contact the end of the biopsy drill to fix the drill bit. At this time, the chuck 105 can be locked onto the end of the biopsy drill through the protrusion 106, so that the chuck connector 1 can be fixed on the orthopedic biopsy drill.

[0033] To further improve the engagement strength between the chuck 105 and the orthopedic biopsy drill, the outer walls of several chucks 105 can be made into arc shapes, so that several chucks 105 can form an intermittent circular structure. Threads are provided on the outer walls of the chucks 105, and then a nut is connected to the outer threads of several chucks 105. When the chucks 105 are engaged with the biopsy drill, the nut is screwed to the protrusion 106, so that the chucks 105 will no longer deform and fall off the biopsy drill.

[0034] The connecting block 2 includes an outer sleeve 202, a middle partition 201, and a central guide sleeve 203. The middle partition 201 is fixed in the middle of the outer sleeve 202 and is parallel to the end face of the outer sleeve 202. The central guide sleeve 203 is provided at the center of the middle partition 201. The central guide sleeve 203 passes through the middle partition 201 and has a circular through hole for the drill bit 5 to pass through. The inner walls of the outer sleeve 202 on both sides of the partition are provided with internal threads. The first external thread 110 can be connected to the outer sleeve 202 by means of threaded connection.

[0035] To further improve the sealing effect, a sealing ring is provided between the drill bit 5 and the central guide sleeve 203. The sealing ring can be set on the central guide sleeve 203. The sealing ring can also prevent leakage of blood, bone marrow and other fluids during the operation.

[0036] See Figures 2-3 The sampling chamber 3 includes a cover 301, a mesh plate (filter plate) 302, and a support sleeve 303. The cover 301 has a funnel-shaped structure and is made of transparent material. One end of the cover 301 is provided with a second external thread 308, which is connected to the outer sleeve 202 by a threaded connection. The end of the cover 301 away from the second external thread 308 is provided with an insert 309. The insert 309, the cover 301, and the second external thread 308 are all made of the same material.

[0037] The perforated plate 302 is disposed inside the cover 301. A support sleeve 303 is provided at the center of the perforated plate 302. The support sleeve 303 can be connected to the central guide sleeve 203. A first through hole 304 is provided at the center of the support sleeve 303. The first through hole 304 can allow the drill bit 5 to pass through. In this embodiment, the support sleeve 303 can be inserted into the central guide sleeve 203. A plurality of second through holes 305 are evenly distributed on the perforated plate 302. The diameter of the second through holes 305 is much smaller than the diameter of the first through holes 304.

[0038] In addition, see Figure 4The inner wall of the cover 301 is provided with a support protrusion 307 in the middle, and the mesh plate 302 contacts the support protrusion 307; the side wall of the cover 301 is provided with an interface pipe 306 that can communicate with the inside of the cover 301. In this embodiment, the interface pipe 306 can be connected to a negative pressure pipe or a negative pressure ball; the interface pipe 306 is located on the side wall of the cover 301 between the support protrusion 307 and the second external threaded part 308.

[0039] See Figure 2 The guide sleeve 4 includes a plug 402 and a tube 401. One end of the tube 401 is provided with a plug 402, which can be inserted into the insert 309.

[0040] The drill bit 5 includes a drill body 501 and a spiral blade 502. The drill bit 5 can pass through the guide sleeve 4. The spiral blade 502 is spirally wound on the drill body 501 and connected to the tip of the drill body 501.

[0041] In use, the guide sleeve 4 is fixed to the sampling chamber 3, which is connected to the bayonet connector 1 via the connecting block 2. The bayonet connector 1 is then fixed to the biopsy drill, and the drill bit 5 is connected to the biopsy drill. At this time, the drill bit 5 can pass through the connecting block 2, the sampling chamber 3, and the guide sleeve 4. Then, the interface pipe 306 on the sampling chamber 3 is connected to the negative pressure pipeline, and the biopsy drill is opened. The material drilled by the biopsy drill is transported into the sampling chamber 3 by the spiral blade 502. Larger debris is blocked and remains in the sampling chamber 3 by the mesh plate 302; smaller debris or powdery objects such as bone meal pass through the mesh plate 302 and are then sucked into the negative pressure pipeline and collected.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A front-end connection device for an orthopedic biopsy drill, comprising a bayonet connector (1), a connecting block (2), a sampling chamber (3), and a guide sleeve (4), characterized in that, The bayonet connector (1) is a hollow structure. One end of the bayonet connector (1) is connected to a connecting block (2). The end of the connecting block (2) away from the bayonet connector (1) is connected to a sampling chamber (3). The end of the sampling chamber (3) away from the connecting block (2) is connected to a guide sleeve (4). A drill bit (5) can be inserted into the guide sleeve (4) of the bayonet connector. The other end of the bayonet connector (1) can be engaged with the biopsy drill. The drill bit (5) can pass through the guide sleeve (4), the sampling chamber (3), and the connecting block (2) and then be connected to the biopsy drill.

2. The orthopedic biopsy drill front-end connection device according to claim 1, characterized in that, The bayonet connector (1) includes a connecting plate (101), a side support sleeve (102), a limiting ring (104), claws (105), and a protrusion (106). A third through hole (107) is provided at the center of the connecting plate (101). A hollow side support sleeve (102) is provided at one end of the connecting plate (101) away from the connecting block (2). An observation window (103) is provided on the side support sleeve (102). A limiting ring (104) is provided above the side support sleeve (102). A number of claws (105) are provided at one end of the limiting ring (104) away from the side support sleeve (102). A protrusion (106) is provided on the inner wall of the claws (105). The claws (105) can be locked onto the biopsy drill.

3. The orthopedic biopsy drill front-end connection device according to claim 2, characterized in that, The third through hole (107) allows the drill bit (5) to pass through; the connecting plate (101) and the connecting block (2) are connected together by a threaded connection.

4. The orthopedic biopsy drill front-end connection device according to claim 1, characterized in that, The connecting block (2) includes an outer sleeve (202), a middle partition (201), and a central guide sleeve (203). The middle partition (201) is fixed in the middle of the outer sleeve (202) and parallel to the end face of the outer sleeve (202). A central guide sleeve (203) is provided at the center of the middle partition (201). The central guide sleeve (203) passes through the middle partition (201) and has a circular through hole for the drill bit (5) to pass through. The inner walls of the outer sleeve (202) on both sides of the partition are provided with internal threads, and the outer sleeve (202) is connected to the first external thread part (110) by means of threaded connection.

5. The orthopedic biopsy drill front-end connection device according to claim 1, characterized in that, The sampling chamber (3) includes a cover (301), a mesh plate (302), and a support sleeve (303). One end of the cover (301) is provided with a second external thread (308), which is connected to the outer sleeve (202) by a threaded connection. The end of the cover (301) away from the second external thread (308) is provided with a tube (309). The tube (309), the cover (301), and the second external thread (308) are all made of the same material. The side wall of the cover (301) is provided with an interface pipe (306) that can connect to the inside of the cover (301). The interface pipe (306) is connected to a negative pressure pipe. The perforated plate (302) is disposed inside the cover (301). A support sleeve (303) is provided at the center of the perforated plate (302). The support sleeve (303) can be connected to the central guide sleeve (203). A first through hole (304) is provided at the center of the support sleeve (303). The first through hole (304) can allow the drill bit (5) to pass through. Several second through holes (305) are evenly distributed on the perforated plate (302). The diameter of the second through hole (305) is smaller than the diameter of the first through hole (304).

6. The orthopedic biopsy drill front-end connection device according to claim 5, characterized in that, The cover (301) has a funnel-shaped structure and is made of transparent material.

7. The orthopedic biopsy drill front-end connection device according to claim 1, characterized in that, The guide sleeve (4) includes a plug (402) and a tube (401). One end of the tube (401) is provided with a plug (402), which can be inserted into the insert (309).

8. The orthopedic biopsy drill front-end connection device according to claim 1, characterized in that, The drill bit (5) includes a drill body (501) and a spiral blade (502). The drill bit (5) can pass through the guide sleeve (4). The spiral blade (502) is spirally wound on the drill body (501) and connected to the tip of the drill body (501).

9. The orthopedic biopsy drill front-end connection device according to claim 5, characterized in that, The inner wall of the cover (301) is provided with a support protrusion (307), and the mesh plate (302) contacts the support protrusion (307); the interface tube (306) is provided on the side wall of the cover (301) between the support protrusion (307) and the second external thread (308).

10. The orthopedic biopsy drill front-end connection device according to claim 2, characterized in that, The outer walls of several of the aforementioned claws (105) are arc-shaped, and the several claws (105) can form an intermittent circular structure. Threads are provided on the outer walls of the claws (105), and a nut is connected to the outer threads of the several claws (105).

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