CN116421369A - Bone ring take-out device - Google Patents

Bone ring take-out device Download PDF

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Publication number
CN116421369A
CN116421369A CN202310406919.XA CN202310406919A CN116421369A CN 116421369 A CN116421369 A CN 116421369A CN 202310406919 A CN202310406919 A CN 202310406919A CN 116421369 A CN116421369 A CN 116421369A
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CN
China
Prior art keywords
sleeve
piece
elastic
channel
elastic sheet
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Granted
Application number
CN202310406919.XA
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Chinese (zh)
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CN116421369B (en
Inventor
张建明
周溢波
尚二冬
胡武
严立展
潘名辉
沈建节
戎银斌
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Hantech Medical Device Co ltd
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Hantech Medical Device Co ltd
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Priority to CN202310406919.XA priority Critical patent/CN116421369B/en
Publication of CN116421369A publication Critical patent/CN116421369A/en
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Publication of CN116421369B publication Critical patent/CN116421369B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4644—Preparation of bone graft, bone plugs or bone dowels, e.g. grinding or milling bone material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones

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  • Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention discloses a bone ring taking-out device, which comprises: the sleeve is internally provided with an inner channel, and one end of the sleeve is at least provided with an opening; the elastic component is connected with the sleeve and at least comprises an elastic sheet, the elastic sheet is positioned in the inner channel, a cutting head is arranged at one end, close to the opening, of the elastic sheet, the elastic sheet can elastically deform towards a preset direction to reach a set position from an initial position so that the cutting head moves towards the direction, close to the inner wall of the sleeve, the cutting head is positioned at the lower end of the elastic sheet, the cutting head bends towards the preset direction relative to the elastic sheet, and the front end of the cutting head is provided with a cutting edge; 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 invention is convenient for taking out the bone ring when the bone surgery is performed.

Description

Bone ring take-out device
Technical Field
The invention relates to the technical field of medical equipment, in particular to a bone ring taking-out device.
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 invention provides a bone ring taking-out device which is convenient for taking out a bone ring when an orthopedic operation is performed.
In order to solve the above technical problems, the present invention provides a bone ring extraction device, comprising:
the sleeve is internally provided with an inner channel, and one end of the sleeve is at least provided with an opening;
the elastic component is connected with the sleeve and at least comprises an elastic sheet, the elastic sheet is positioned in the inner channel, a cutting head is arranged at one end, close to the opening, of the elastic sheet, the elastic sheet can elastically deform towards a preset direction to reach a set position from an initial position so that the cutting head moves towards the direction, close to the inner wall of the sleeve, the cutting head is positioned at the lower end of the elastic sheet, the cutting head bends towards the preset direction relative to the elastic sheet, and the front end of the cutting head is provided with a cutting edge;
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 inner channel, the opening is formed at the lower end of the lower sleeve, the elastic piece is located in the first channel, and the inner 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, in the above technical solution, a handle is fixed on the top of the torsion bar, and the handle is perpendicular to the torsion bar.
As the optimization of the technical scheme, the torsion bar is detachably connected with the ejector rod, a T-shaped groove is formed in the external thread section, a lug is arranged at the upper end of the ejector rod and matched with the T-shaped groove, and the lug is a round block so that the lug can rotate in 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 invention provides a bone ring taking-out device, 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 device 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 taken out by rotating the whole sleeve so that the cutting head can cut off the bone ring from the bone by rotary cutting for one circle.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention 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 a structure of a bone ring removing device in the present embodiment;
fig. 3 is an exploded perspective view showing a bone ring removing device according to the present embodiment;
fig. 4 shows a cross-sectional view of a bone ring removal device in this 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;
fig. 8 to 11 are schematic views showing the operation of a bone ring removing device 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 invention more comprehensible, the technical solutions according to the embodiments of the present invention 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 invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2 to 7, an embodiment of the present invention provides a bone ring removing device, comprising:
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 taking out device, 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 the 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 cut-in head can take out the bone ring, the cutting of bone ring taking out device of this embodiment's bone ring takes out is convenient, 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 inner 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 inner 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, referring to fig. 8 to 11, a bone ring removing device of the present embodiment is sleeved on a bone ring as shown in fig. 1, in which the lower sleeve 10 covers the bone ring as shown in fig. 8, and the elastic piece 205 extends into the central hole of the bone ring, referring to 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 rod 60 to move downwards, in the process of moving downwards the ejector rod 60, the inner side surface of the vertical piece 203 is in contact with the flat surface 601 of the ejector rod 60, the ejector rod 60 pushes the front end of the ejector rod 60 against the elastic piece 205 along the vertical piece 203, and since the elastic piece 205 extends obliquely, the elastic piece 205 is elastically deformed toward the direction away from the ejector rod 60 until the inner side surface of the elastic piece 205 is integrally contacted with the elastic piece 205, and the cutting head 206 cuts outwards from the central hole of the bone ring to the interior of the bone ring, then rotates the whole bone ring removing device 206 to separate the bone ring from the cutting head 205 and the bone ring 10 from the sleeve 10, and the elastic piece 10 can be removed from the sleeve 10 after the elastic piece is removed, referring to the handle 10 is reversely shown in the drawing.
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 invention. 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 invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is merely illustrative of the present invention, and the present invention 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 invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A bone ring removal device, comprising:
the sleeve is internally provided with an inner channel, and one end of the sleeve is at least provided with an opening;
the elastic component is connected with the sleeve and at least comprises an elastic sheet, the elastic sheet is positioned in the inner channel, a cutting head is arranged at one end, close to the opening, of the elastic sheet, the elastic sheet can elastically deform towards a preset direction to reach a set position from an initial position so that the cutting head moves towards the direction, close to the inner wall of the sleeve, the cutting head is positioned at the lower end of the elastic sheet, the cutting head bends towards the preset direction relative to the elastic sheet, and the front end of the cutting head is provided with a cutting edge;
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.
2. The bone ring removal device of claim 1, wherein the driver comprises a ram disposed in the interior channel, the ram being movable in the interior channel along a length of the sleeve such that a side force of the ram acts against a side of the resilient tab to resiliently deform the resilient tab.
3. The bone ring removing device according to claim 2, wherein the driving member further comprises a torsion bar, an internal thread is formed on an inner wall of the internal passage, an external thread section is provided at a lower end of the torsion bar, the torsion bar extends into the internal passage, the internal thread is threadedly connected with the external thread section, and the ejector rod is connected with the torsion bar.
4. The bone ring removing apparatus as claimed in claim 2, wherein the ejector rod is provided with a flat surface along a length direction thereof for contact with a side surface of the elastic sheet.
5. The bone ring removing device according to claim 3, wherein the sleeve includes a lower sleeve having a first passage in an interior thereof and an upper sleeve having a second passage in an interior thereof, an upper end of the lower sleeve being connected to a lower end of the upper sleeve, the first passage and the second passage being communicated with each other to form the inner passage, the opening being formed in a lower end of the lower sleeve, the elastic piece being located in the first passage, the internal thread being formed in an inner wall of the second passage.
6. The bone ring removal device of claim 5, wherein the resilient member comprises a ring body, the resilient tab being coupled to the ring body, the ring body being disposed between an upper end of the lower sleeve and a lower end of the upper sleeve.
7. The bone ring removing device according to claim 5, 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 is in threaded fit with the internal thread, 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 sheet 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 removal device of claim 3, wherein a handle is secured to a top of the torsion bar, the handle being perpendicular to the torsion bar.
9. The bone ring removing device according to claim 8, wherein the torsion bar is detachably connected to the ejector rod, a T-shaped groove is provided in the male screw section, a projection is provided at an upper end of the ejector rod, the projection is engaged with the T-shaped groove, and the projection is a circular block so that the projection can rotate in the T-shaped groove.
10. The bone ring removing device 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 pin contacts with the flat surface, the elastic piece is in an initial position state, the elastic piece is downward and obliquely extends near the ejector pin, and the elastic piece is in the same vertical plane as the flat piece in a set position state.
CN202310406919.XA 2023-04-17 2023-04-17 Bone ring take-out device Active CN116421369B (en)

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CN213372419U (en) * 2020-06-11 2021-06-08 北京天智航医疗科技股份有限公司 Orthopedic screw driver and orthopedic screw
CN112957593A (en) * 2021-01-18 2021-06-15 宁波汉科医疗器械有限公司 Eustachian tube balloon catheter imbedding device
CN218075129U (en) * 2022-07-07 2022-12-20 河南省洛阳正骨医院（河南省骨科医院） Trephine bone extractor
CN219763464U (en) * 2023-04-17 2023-09-29 宁波汉科医疗器械有限公司 Bone ring extractor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2105357U (en) * 1990-10-18 1992-05-27 王建欣 Soldering iron
US20180021522A1 (en) * 2016-07-21 2018-01-25 Jian-Sen Weng Medical injection device
CN109787012A (en) * 2019-02-27 2019-05-21 深圳市泰科汉泽精密电子有限公司 Spring probe
CN212415883U (en) * 2020-04-15 2021-01-29 郑州仁济医院 Minimally invasive screw taking-out device with anti-slipping function
CN213372419U (en) * 2020-06-11 2021-06-08 北京天智航医疗科技股份有限公司 Orthopedic screw driver and orthopedic screw
CN112155678A (en) * 2020-10-30 2021-01-01 缙云都画医疗科技有限公司 Large-scale cyst pustule operation device
CN112957593A (en) * 2021-01-18 2021-06-15 宁波汉科医疗器械有限公司 Eustachian tube balloon catheter imbedding device
CN218075129U (en) * 2022-07-07 2022-12-20 河南省洛阳正骨医院（河南省骨科医院） Trephine bone extractor
CN219763464U (en) * 2023-04-17 2023-09-29 宁波汉科医疗器械有限公司 Bone ring extractor

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