CN219763464U

CN219763464U - Bone ring extractor

Info

Publication number: CN219763464U
Application number: CN202320850654.8U
Authority: CN
Inventors: 张建明; 周溢波; 尚二冬; 胡武; 严立展; 潘名辉; 沈建节; 戎银斌
Original assignee: Hantech Medical Device Co ltd
Current assignee: Hantech Medical Device Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-09-29
Anticipated expiration: 2033-04-17

Abstract

The utility model discloses a bone ring extractor, comprising: a sleeve, wherein an internal channel is formed in the sleeve, and one end of the sleeve is at least provided with an opening; the elastic part is connected with the sleeve and at least comprises an elastic sheet, the elastic sheet is positioned in the inner channel, one end of the elastic sheet, which is close to the opening, is provided with a cutting head, and the elastic sheet can elastically deform towards a preset direction from an initial position to a set position so that the cutting head moves towards the direction close to the inner wall of the sleeve; and the driving piece is connected with the sleeve and can move towards a set direction relative to the sleeve so as to drive the elastic piece to reach a set position from an initial position. The utility model is convenient for taking out the bone ring when the bone surgery is performed.

Description

Bone ring extractor

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a bone ring extractor.

Background

During bone surgery, especially when performing bone extraction surgery, a doctor forms a bone ring on a bone as shown in fig. 1 through a special medical device, but the bone ring is still connected with the bone, so that the bone ring needs to be separated from the bone to be extracted, and the extractor in the prior art is complex in structure and inconvenient in bone ring separation and bone extraction operation, or cannot be separated from the bone.

Disclosure of Invention

The utility model provides a bone ring extractor which is convenient for extracting bone rings when bone surgery is performed.

In order to solve the above technical problems, the present utility model provides a bone ring extractor, comprising:

a sleeve, wherein an internal channel is formed in the sleeve, and one end of the sleeve is at least provided with an opening;

the elastic part is connected with the sleeve and at least comprises an elastic sheet, the elastic sheet is positioned in the inner channel, one end of the elastic sheet, which is close to the opening, is provided with a cutting head, and the elastic sheet can elastically deform towards a preset direction from an initial position to a set position so that the cutting head moves towards the direction close to the inner wall of the sleeve;

and the driving piece is connected with the sleeve and can move towards a set direction relative to the sleeve so as to drive the elastic piece to reach a set position from an initial position.

As a preferable aspect of the foregoing disclosure, the driving member includes a push rod disposed in the internal channel, the push rod being movable in the internal channel along a length direction of the sleeve so that a side force of the push rod acts on a side surface of the elastic sheet to elastically deform the elastic sheet.

As the preference of above-mentioned technical scheme, the driving piece still includes the torsion bar, be formed with the internal thread on the inner wall of interior passageway, the lower extreme of torsion bar is provided with the external screw thread section, the torsion bar stretches into to interior passageway, the internal thread with external screw thread section threaded connection, the ejector pin with the torsion bar is connected.

As a preferable aspect of the above-mentioned technical solution, the ejector pin is provided with a flat surface along a length direction thereof, and the flat surface is used for contacting with a side surface of the elastic piece.

As a preferable mode of the above technical solution, the sleeve includes a lower sleeve and an upper sleeve, the interior of the lower sleeve has a first channel, the interior of the upper sleeve has a second channel, the upper end of the lower sleeve is connected with the lower end of the upper sleeve, the first channel and the second channel are mutually communicated to form the internal channel, the opening is formed at the lower end of the lower sleeve, the elastic piece is located in the first channel, and the internal thread is formed on the inner wall of the second channel.

As a preferable mode of the above technical solution, the elastic component further includes a ring body, the elastic piece is connected with the ring body, and the ring body is clamped between the upper end of the lower sleeve and the lower end of the upper sleeve.

As the preference of above-mentioned technical scheme, the upper end of lower telescopic has the connection head, the diameter of connection head is less than the diameter of lower telescopic, be formed with the external screw thread on the connection head, the connection head is followed the lower extreme opening of upper telescopic stretches into to the second passageway, external screw thread with screw thread cooperation between the internal screw thread, be formed with the perforation on the connection head along its length direction, the fenestrate both ends respectively with first passageway and second passageway intercommunication, the ring body cover is established on the connection head, the side of connection head is formed with and extends to the breach of perforation, the elastic sheet passes through breach and perforation stretch into to the second passageway, the lower extreme of ejector pin can pass the perforation stretches into to first passageway.

Preferably, the torsion bar is detachably connected with the ejector rod.

As the optimization of the technical scheme, the T-shaped groove is formed in the external thread section, the protruding block is arranged at the upper end of the ejector rod, and the protruding block is matched with the T-shaped groove.

As the preference of above-mentioned technical scheme, elastomeric element still includes straight piece and vertical piece, the one end of straight piece with the inboard of ring body is connected, the other end of straight piece towards being close to the central direction horizontal extension of ring body, the upper end of vertical piece with straight piece is connected, the lower extreme of vertical piece with the upper end of elastomeric element is connected, vertical downwardly extending of vertical piece, vertical piece be close to a side plane of ejector pin with flat face contact, elastomeric element is in under the initial position state the elastomeric element is down and be close to the ejector pin slant extends, the elastomeric element is in under the settlement position state the elastomeric element with straight piece is in same vertical plane.

The utility model provides a bone ring extractor, which comprises a sleeve, an elastic part and a driving part, wherein an opening of the sleeve is sleeved on a bone ring when the bone ring extractor works, the elastic part stretches into a central hole of the bone ring when the elastic part is at an initial position, then the driving part drives an elastic sheet to elastically deform to reach a set position, when the elastic part elastically deforms, a cutting head of the elastic part can cut into the bone ring outwards from the central hole, and then the bone ring can be extracted by rotating the whole sleeve so that the cutting head can cut off the bone ring from the bone by rotating the whole sleeve for a circle.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

FIG. 1 shows a cross-sectional view of a bone ring in this embodiment;

fig. 2 is a schematic view showing the structure of a bone ring extractor according to the present embodiment;

fig. 3 is an exploded perspective view of a bone ring extractor according to the present embodiment;

FIG. 4 shows a cross-sectional view of a bone ring extractor of the present embodiment;

fig. 5 shows a schematic view of the mounting structure of the elastic member in the present embodiment;

fig. 6 is a schematic diagram showing the working states of the ejector pin and the elastic piece in the present embodiment;

fig. 7 is a schematic perspective view showing the elastic member in the present embodiment;

FIGS. 8 to 11 are schematic views showing the operation of a bone ring extractor according to the present embodiment;

in the figure: 10. a lower sleeve; 20. an elastic member; 30. an upper sleeve; 40. a torsion bar; 50. a handle; 60. a push rod; 100. a sleeve; 200. a driving member; 101. a connecting head; 102. perforating; 103. a notch; 104. a first channel; 105. an external thread; 106. a side hole; 201. a ring body; 202. a flat sheet; 203. a vertical piece; 204. a bayonet; 205. an elastic sheet; 206. cutting into the head; 301. a second channel; 401. a T-shaped groove; 402. an external thread section; 601. a flat surface; 602. and a bump.

Detailed Description

In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions according to the embodiments of the present utility model will be clearly described in the following with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 2 to 7, an embodiment of the present utility model provides a bone ring extractor including:

a sleeve 100, an inner passage is formed inside the sleeve 100, and one end of the sleeve 100 has at least an opening;

the elastic component 20 is connected with the sleeve 100, the elastic component 20 at least comprises an elastic sheet 205, the elastic sheet 205 is positioned in the inner channel, one end, close to the opening, of the elastic sheet 205 is provided with a cutting head 206, and the elastic sheet 205 can elastically deform towards a preset direction from an initial position to a set position so that the cutting head 206 moves towards a direction close to the inner wall of the sleeve 100;

the driving element 200 is connected to the sleeve 100, and the driving element 200 is movable in a set direction with respect to the sleeve 100 to drive the elastic piece 205 from the initial position to the set position.

The embodiment provides a bone ring extractor, it includes sleeve 100, elastomeric element 20 and driving piece 200, it is when the work with the opening cover of sleeve establish on the bone ring as shown in fig. 1, and the elastomeric sheet stretches into in the centre bore of bone ring when the elastomeric sheet is in initial position, then take place elastic deformation in order to reach the settlement position through driving piece 200 drive elastomeric sheet, when this elastomeric element elastic deformation, its cut-in head can outwards cut into bone ring from the centre bore, then through rotating whole sleeve thereby make cut-in head rotary-cut a week cut with bone ring and bone between can take out the bone ring, the cutting of bone ring extractor of this embodiment is convenient for its cutting-in bone ring take-out, and its overall structure is simple, convenient operation.

Specifically, in the present embodiment, the cutting head 206 is bent with respect to the elastic piece 205, and the cutting head 206 is bent in a predetermined direction, which coincides with the elastic deformation direction of the elastic piece 205, and the tip of the cutting head 206 has a cutting edge.

In a further implementation of this embodiment, the driving member 200 includes a push rod 60, where the push rod 60 is disposed in the internal channel, and the push rod 60 is capable of moving along the length direction of the sleeve 100 in the internal channel so that a side force of the push rod 60 acts on a side of the elastic piece 205 to elastically deform the elastic piece 205.

In this embodiment, the side surface of the ejector rod 60 is pressed against the side surface of the elastic piece 205 by the downward movement of the ejector rod 60, so that the elastic piece 205 is elastically deformed to one side, which can cut the cutting head 206 into the bone ring more effort-saving.

In a further implementation manner of this embodiment, the driving member 200 further includes a torsion bar 40, an internal thread is formed on an inner wall of the internal channel, an external thread section 402 is provided at a lower end of the torsion bar 40, the torsion bar 40 extends into the internal channel, the internal thread is in threaded connection with the external thread section 402, and the ejector rod 60 is connected with the torsion bar 40.

In this embodiment, the rotation torsion bar 40 is rotated to drive the ejector rod 60 to move up and down during operation.

In a further implementation of this embodiment, the ejector rod 60 is provided with a flat surface 601 along its length, and the flat surface 601 is used to contact with the side surface of the elastic piece 205.

In this embodiment, the flat surface 601 is used to be connected with the side surface of the elastic sheet 205 in the process of driving the elastic sheet 205 to elastically deform, so that the whole process is more stable, and the stress is more uniform, meanwhile, the flat surface 601 is contacted with the side surface of the elastic sheet 205, so that the stability in the process of cutting into the head 206 for rotary cutting can be effectively ensured.

Specifically, in this embodiment, the upper end of the ejector pin 60 is movably connected with the lower end of the torsion bar 40, that is, the ejector pin 60 can rotate relative to the torsion bar 40, and because the flat surface 601 contacts the elastic piece 205, the ejector pin 60 moves intelligently in the vertical direction relative to the elastic piece 205, and the ejector pin 60 cannot move in the circumferential direction relative to the elastic piece 205, so that the upper end of the ejector pin 60 is movably connected with the lower end of the torsion bar 40, and therefore, the torsion bar 40 can only drive the ejector pin 60 to move up and down, and cannot drive the ejector pin 60 to rotate.

In a further implementation of the present embodiment, the sleeve 100 includes a lower sleeve 10 and an upper sleeve 30, the interior of the lower sleeve 10 has a first channel 104, the interior of the upper sleeve 30 has a second channel 301, the upper end of the lower sleeve 10 is connected with the lower end of the upper sleeve 30, the first channel 104 and the second channel 301 are communicated with each other to form an internal channel, an opening is formed at the lower end of the lower sleeve 10, an elastic piece 205 is located in the first channel 104, and an internal thread is formed at the inner wall of the second channel 301.

The sleeve 100 in this embodiment includes a lower sleeve 10 and an upper sleeve 30, which can facilitate the installation and removal of the components.

In a further implementation of this embodiment, the elastic member 20 further includes a ring 201, and the elastic piece 205 is connected to the ring 201, where the ring 201 is clamped between the upper end of the lower sleeve 10 and the lower end of the upper sleeve 30.

The ring 201 in this embodiment can facilitate the installation and positioning of the elastic member 20, and in addition, the ring 201 in this embodiment is provided with a bayonet 204, and the ring 201 may have elasticity.

In a further implementation manner of this embodiment, the upper end of the lower sleeve 10 is provided with a connection head 101, the diameter of the connection head 101 is smaller than that of the lower sleeve 10, an external thread 105 is formed on the connection head 101, the connection head 101 extends into the second channel 301 from the lower end opening of the upper sleeve 30, the external thread 105 is in threaded fit with the internal thread, a through hole 102 is formed on the connection head 101 along the length direction of the connection head 101, two ends of the through hole 102 are respectively communicated with the first channel 104 and the second channel 301, a ring body 201 is sleeved on the connection head 101, a notch 103 extending to the through hole 102 is formed on the side surface of the connection head 101, an elastic piece 205 extends into the second channel 301 through the notch 103 and the through hole 102, and the lower end of the ejector rod 60 can extend into the first channel 104 through the through hole 102.

The ring 201 in this embodiment is elastically sleeved on the connection head 101, and the connection head 101 not only can be conveniently and detachably connected with the upper sleeve 30, but also can be conveniently and conveniently installed and positioned by the elastic component 20, when the ring 201 is installed, the ring 201 is sleeved on the connection head 101, and then the elastic piece 205 extends into the second channel 301 through the notch 103 and the perforation 102.

In a further alternative embodiment of the present embodiment, the torsion bar 40 is detachably connected to the carrier bar 60.

In a further implementation manner of this embodiment, the external thread section 402 is provided with a T-shaped groove 401, and the upper end of the ejector rod 60 is provided with a protruding block 602, and the protruding block 602 is matched with the T-shaped groove 401.

The bump 602 in this embodiment is a circular block, and the bump 602 in this embodiment can rotate in a T-shaped slot.

In a further implementation manner of this embodiment, the elastic component 20 further includes a flat piece 202 and a vertical piece 203, one end of the flat piece 202 is connected with the inner side of the ring body 201, the other end of the flat piece 202 extends horizontally towards the direction close to the center of the ring body 201, the upper end of the vertical piece 203 is connected with the flat piece 202, the lower end of the vertical piece 203 is connected with the upper end of the elastic piece 205, the vertical piece 203 extends vertically downwards, the plane of one side of the vertical piece 203 close to the ejector pin 60 contacts with the flat surface 601, the elastic piece 205 in the initial position state extends downwards and obliquely close to the ejector pin 60, and the elastic piece 205 and the flat piece 202 in the set position state are in the same vertical plane.

The elastic piece 205 in this embodiment extends obliquely, the elastic piece 205 in this embodiment is connected with the ring 201 through the vertical piece 203 and the flat piece 202, and the side surface of the vertical piece 203 contacts with the flat surface 601 to play a role in guiding and positioning.

The top of ejector pin 60 in this embodiment is fixed with handle 50, this handle 50 perpendicular to ejector pin 60, be provided with a plurality of side openings 106 on the lateral wall of lower sleeve 10 in this embodiment so that lower sleeve 10 presents the fretwork form, it can be convenient for observe, in addition, a lot of plasma can appear in the orthopedic operation process, plasma glues and extremely easily leads to the apparatus inner chamber to form vacuum on the bone surface, this side opening 106 can prevent effectively that lower sleeve 10 inner chamber from appearing the vacuum effect and leading to the bone ring to adsorb in the inside of lower sleeve 10 unable take out, in addition, when the bone ring card is inside lower sleeve 10, can take out the bone ring through the back needle from the outside.

In the working process of the bone ring extractor of the present embodiment, as shown in fig. 8 to 11, when the bone ring extractor of the present embodiment is in operation, the bone ring extractor is sleeved on the bone ring as shown in fig. 1, the lower sleeve 10 covers the bone ring as shown in fig. 8, the elastic piece 205 extends into the central hole of the bone ring, as shown in fig. 9, the handle 50 is rotated to rotate the torsion bar 40, the external thread section 402 is matched with the internal thread to drive the ejector 60 to move downwards, the inner side surface of the vertical piece 203 is in contact with the flat surface 601 of the ejector 60 in the process of moving downwards the ejector 60, the ejector 60 pushes the front end of the ejector 60 against the elastic piece 205 along the vertical piece 203, and because the elastic piece 205 extends obliquely, the elastic piece 205 is elastically deformed towards the direction away from the ejector 60 until the inner side surface of the elastic piece 205 is integrally contacted with the elastic piece 205, and the cut-in head 206 extends outwards from the central hole of the bone ring to the inside of the bone ring, then the whole bone ring 206 is rotated to enable the cut-in the bone ring, the cut-off head 205 to be separated from the bone ring, and the bone ring is cut-off from the cut-off piece 10 and the sleeve 10 is rotated to be separated from the elastic piece 10, as shown in the initial sleeve 10, and the bone ring 10 is removed, as shown in the initial sleeve 10 is removed, and the bone ring is cut off from the bone ring 10 is cut in the cut-off, and the sleeve 10 is cut.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A bone ring remover, comprising:

2. The bone ring remover according to claim 1, wherein the driver comprises a ram disposed in the interior channel, the ram being movable in the interior channel along the length of the sleeve such that a side force of the ram acts against a side of the resilient sheet to resiliently deform the resilient sheet.

3. The bone ring remover according to claim 2, wherein said driving member further comprises a torsion bar, wherein an internal thread is formed on an inner wall of said internal channel, wherein an external thread section is provided at a lower end of said torsion bar, said torsion bar extends into said internal channel, wherein said internal thread is threadedly coupled to said external thread section, and wherein said ejector rod is coupled to said torsion bar.

4. The bone ring remover as claimed in claim 2, wherein the ejector rod is provided with a flat surface along its length for contact with the side surface of the elastic sheet.

5. The bone ring remover as claimed in claim 3, wherein the sleeve comprises a lower sleeve and an upper sleeve, the interior of the lower sleeve has a first passage, the interior of the upper sleeve has a second passage, the upper end of the lower sleeve is connected to the lower end of the upper sleeve, the first passage and the second passage communicate with each other to form the inner passage, the opening is formed at the lower end of the lower sleeve, the elastic piece is located in the first passage, and the internal thread is formed at the inner wall of the second passage.

6. The bone ring extractor of claim 5 wherein the resilient member includes a ring body, the resilient tab being connected to the ring body, the ring body being clamped between the upper end of the lower sleeve and the lower end of the upper sleeve.

7. The bone ring extractor according to claim 6, wherein the upper end of the lower sleeve is provided with a connecting head, the diameter of the connecting head is smaller than that of the lower sleeve, an external thread is formed on the connecting head, the connecting head extends into the second channel from the lower end opening of the upper sleeve, the external thread and the internal thread are in threaded fit, a through hole is formed on the connecting head along the length direction of the connecting head, two ends of the through hole are respectively communicated with the first channel and the second channel, the ring body is sleeved on the connecting head, a notch extending to the through hole is formed on the side surface of the connecting head, the elastic piece extends into the second channel through the notch and the through hole, and the lower end of the ejector rod can extend into the first channel through the through hole.

8. The bone ring remover as in claim 3, wherein the torsion bar is removably coupled to the push rod.

9. The bone ring remover as claimed in claim 8, wherein the male screw section is provided with a T-shaped groove, and the upper end of the push rod is provided with a protrusion, and the protrusion is engaged with the T-shaped groove.

10. The bone ring extractor according to claim 6, wherein the elastic member further comprises a flat piece and a vertical piece, one end of the flat piece is connected to the inner side of the ring body, the other end of the flat piece horizontally extends toward the center direction near the ring body, the upper end of the vertical piece is connected to the flat piece, the lower end of the vertical piece is connected to the upper end of the elastic piece, the vertical piece vertically extends downward, a side plane of the vertical piece near the ejector rod contacts with the flat surface of the ejector rod, the elastic piece is in an initial position state, the elastic piece is downward and obliquely extends near the ejector rod, and the elastic piece is in the same vertical plane as the flat piece in a set position state.