Medical broken instrument taking-out lantern ring device

Abstract

The invention relates to the technical field of medical instruments, in particular to a medical broken instrument taking-out lantern ring device which comprises a lantern ring assembly, a connecting assembly, a sleeve assembly and a restorer, the lantern ring assembly comprises a lantern ring wire, the lantern ring wire is bent to form a lantern ring, and the lantern ring is used for taking a broken instrument in a sleeving mode; the connecting assembly is connected with the lantern ring assembly; the sleeve assembly is connected with the connecting assembly; the repositor is arranged at the tail part of the sleeve assembly, and the sleeve ring is tightened on the broken instrument by pushing the repositor through the sleeve assembly and the connecting assembly, so that the broken instrument is taken out by pulling. The index finger and the middle finger clamp the sleeve and abut against the finger support, the thumb abuts against the spring cover, the index finger and the middle finger extrude the finger support, the lantern ring can be shrunk to firmly sleeve a broken instrument, then the device is pulled outwards, the broken instrument is pulled out, the whole operation process is simple, and operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for removing a broken medical instrument ring. Background Technology

[0002] In the medical field, procedures such as orthopedics, maxillofacial surgery, and alveolar surgery often require the use of drills for bone removal, while dental procedures often involve the use of files for root canal preparation. Occasionally, due to improper use or instrument fatigue, drills may break off inside the bone, or files may break off inside the root canal. Clinically, these broken instruments become stuck in narrow cavities, making them impossible to remove with ordinary forceps or clamps, requiring the use of specialized instruments for retrieval.

[0003] To address this issue, existing devices for retrieving broken instruments mainly fall into three categories: sleeve-awl, lasso, and micro-clamps. The "sleeve-awl" solution requires a series of sleeves and awls of varying sizes for broken instruments as thin as a pen holder. Because the sleeve needs to be aligned with the broken instrument, it obstructs the view when using this method. The "micro-clamps" solution, with its very small clamping force, is unsuitable for retrieving tightly stuck broken instruments.

[0004] Existing "lasso" (or thimble) technology solutions, such as Chinese invention patent with publication number CN115105230A, disclose a combined thimble system for removing broken instruments from the root canal. This system includes an outer tube, within which a thimble tube assembly extends partially. The thimble tube assembly includes a sleeve and a filamentous thimble extending from one end of the sleeve to form a thimble. An adjustable mounting component for installing the thimble tube assembly is located within the outer tube. A push-transmission block, which works with the adjustable mounting component to move the sleeve and adjust the thimble size, is also located within the outer tube. A handheld power component, detachably connected to the outer tube and providing thrust to the push-transmission block, is located outside the outer tube.

[0005] While the aforementioned lasso-type existing technology has the advantages of good operating visibility and strong clamping force, it also has problems such as complex device structure, inconvenient installation of lasso wires, and inconvenient operation when tightening the lasso ring. Summary of the Invention

[0006] To address the technical problems of complex structure and inconvenient operation of existing broken instrument removal devices, this invention provides a medical broken instrument removal ring device.

[0007] Terminology Explanation: Unless otherwise defined, all technical terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this subject matter pertains. Unless otherwise stated, all patents, patent inventions, and disclosures cited throughout this document are incorporated herein by reference in their entirety. Where multiple definitions exist for terms herein, the definitions provided in this chapter shall prevail.

[0008] It should be understood that the above brief description and the following detailed description are exemplary and for illustrative purposes only, and do not limit the subject matter of the invention in any way. In this invention, the singular is used in conjunction with the plural unless otherwise specifically stated. It should also be noted that, unless otherwise stated, the use of “or” or “or” means “and / or”. Furthermore, the use of the term “comprising” and other forms such as “including,” “containing,” and “contains” are not limiting.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows: A device for removing a broken medical instrument collar, comprising: A collar assembly, the collar assembly including a collar wire, the collar wire being bent to form a collar, the collar being used to retrieve a broken instrument; A connecting component, which is connected to the collar assembly; A sleeve assembly, which is connected to the connecting assembly; A resetter is disposed at the tail of the sleeve assembly. By pushing the resetter, the resetter, through the sleeve assembly and the connecting assembly, tightens the collar onto the broken instrument, thereby pulling the broken instrument out.

[0010] Furthermore, the sleeve assembly includes a sleeve, and a collar wire fixing assembly is disposed on the outside of the sleeve; the tail end of the collar wire is fixed inside the collar wire fixing assembly.

[0011] Furthermore, the connecting assembly includes a push rod and a connector, the front end of the push rod is connected to the connector, the outside of the connector is connected to the collar assembly, the center of the connector is provided with a push rod center hole groove, and the collar wire passes through the push rod center hole groove and is fixed in the collar wire fixing assembly; The push rod passes through the sleeve and can rotate and translate within the sleeve.

[0012] Furthermore, a push rod limiting edge is provided at the junction of the push rod and the connector, and the front end face of the sleeve abuts against the push rod limiting edge.

[0013] Furthermore, the reset device includes a reset spring and a spring cover, and a reset spring seat is provided on the inner side wall of the tail end of the sleeve; one end of the reset spring abuts against the reset spring seat, and the other end of the reset spring abuts against the spring cover, and the spring cover is connected to the rear end face of the push rod.

[0014] Furthermore, the resetter also includes a spring cover screw, the spring cover being detachably connected to the rear end face of the push rod via the spring cover screw.

[0015] Furthermore, the collar thread fixing assembly includes a clamping screw seat, which is fixedly disposed on the outer side wall of the sleeve. The clamping screw seat is U-shaped and has a through hole between it and the outer side wall of the sleeve for the collar thread to pass through. The clamping screw seat is also provided with a screw hole, which is arranged radially along the sleeve. A recess is provided on the outer surface of the sleeve at a position corresponding to the screw hole. A clamping screw passes through the screw hole and clamps the collar thread in the recess or between the clamping screw and the inner wall of the clamping screw seat.

[0016] Furthermore, a finger support is provided on the outer wall of the sleeve, and the finger support is ring-shaped, square, or elliptical.

[0017] Furthermore, the collar assembly also includes a needle tube and a needle plug. One end of the needle tube is connected to the front end of the needle plug. The outer surface of the rear end of the needle plug is provided with a needle plug bottom edge, which consists of two opposing protrusions. The outer wall of the connector is provided with a needle plug lock that is folded 180°. The needle plug lock is folded outward and forward from the outer wall of the connector. There is a receiving cavity between the needle plug lock and the outer wall of the connector, and the front end of the receiving cavity is open. The inner wall of the needle bolt lock has internal threads. After the two protrusions are screwed into the threads inside the needle bolt lock, they cooperate with the threads inside the needle bolt lock 22 and lock the needle bolt.

[0018] Furthermore, the needle plug is a hollow cone with an open tip, and the connector is conical. When the needle plug is threadedly connected to the connector, the inner wall of the needle plug is in close contact with the outer surface of the connector.

[0019] Furthermore, the collar wire is made of metal wire, polymer material or ceramic filament.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a medical device for removing broken instruments. It has a simple structure and is easy to use. After the collar is installed, the index and middle fingers are used to hold the sleeve against the finger support, the thumb is used to hold the spring cover, and the index and middle fingers squeeze the finger support to make the collar shrink and securely fit the broken instrument. Then, the device is pulled outward to remove the broken instrument. The whole operation process is simple and convenient.

[0021] 2. In this invention, clamping screws are used to fix the collar wire. This clamping and fixing method of the collar wire facilitates quick installation or replacement of the collar wire, and the connection is firm, making it suitable for breaking instruments with tight locking mechanisms.

[0022] 3. In this invention, the push rod can rotate in the sleeve, which can control the direction of the collar. The needle can be pre-bent in a pre-designed direction, which is convenient for observation and operation. At the same time, it is convenient to extend the needle to the side of the broken instrument and then use the collar to cover the broken instrument. Attached Figure Description

[0023] Figure 1 This is an axial sectional view of the present invention, in which the needle has been pre-bent; Figure 2 This is a schematic diagram of the external structure of the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Collar assembly; 11. Collar; 12. Needle tube; 13. Needle plug; 14. Bottom edge of needle plug; 15. Collar wire; 2. Connecting assembly; 21. Connector; 22. Needle bolt lock; 23. Needle bolt lock thread; 24. Push rod; 25. Push rod limiting edge; 26. Push rod center groove. 3. Sleeve assembly; 31. Sleeve; 32. Finger support; 33. Clamping screw; 34. Clamping screw seat; 35. Recess; 36. Screw hole; 37. Return spring seat. 4. Reset device; 41. Reset spring; 42. Spring cover; 43. Spring cover screw. Detailed Implementation

[0025] The technical solution of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0026] It should be noted that, unless otherwise specifically stated, the relative arrangement and numerical expressions of the components and steps described in these embodiments should not be construed as limiting the scope of the invention.

[0027] The following description of exemplary embodiments is merely illustrative and is not intended to limit the invention or its application or use in any way. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but where applicable, such techniques, methods, and apparatus should be considered part of this specification.

[0028] Terminology Explanation: Front-end and back-end: based on Figure 1 or Figure 2 The left end is the front end, and the right end is the rear end.

[0029] Example 1 This embodiment provides a medical device for removing broken medical instruments, such as... Figure 1 and Figure 2 As shown, it includes: A collar assembly 1, comprising a collar wire 15, wherein the collar wire 15 is bent to form a collar 11, and the collar 11 is used to retrieve a broken instrument; Connection component 2, which is connected to the collar assembly 1; Sleeve assembly 3, which is connected to the connecting assembly 2; The resetter 4 is located at the tail of the sleeve assembly 3. By pushing the resetter 4, the resetter 4, through the sleeve assembly 3 and the connecting assembly 2, tightens the collar 11 onto the broken instrument, and then pulls the broken instrument out.

[0030] The collar assembly 1 further includes a needle tube 12 and a needle plug 13. One end of the needle tube 12 is connected to the front end of the needle plug 13. The needle tube 12 has a central hole through which the collar wire 15 can pass. Before use, the needle tube 12 is straight and not pre-bent. After folding the collar wire 15 in half, both ends of the collar wire 15 are passed through the needle tube 12, leaving a portion of the collar wire 15 at the front end of the needle tube 12, forming a collar 11.

[0031] The needle bolt 13 has a central hole through which the loop wire 15 passes. The needle bolt 13 is a hollow cone with an open tip. The outer surface of the rear end of the needle bolt 13 is provided with a needle bolt bottom edge 14. The needle bolt bottom edge 14 consists of two oppositely arranged protrusions. After the two protrusions are screwed into the threads in the needle bolt lock 22, they cooperate with the threads in the needle bolt lock 22 and lock the needle bolt 13.

[0032] The connecting assembly 2 includes a push rod 24 and a connector 21. The front end of the push rod 24 is connected to the connector 21, and the push rod 24 and the connector 21 are fixedly connected or integrally formed. The connector 21 is tapered. A 180° folded pin lock 22 is provided on the outer wall of the connector 21. The pin lock 22 folds outward and forward from the outer wall of the connector 21, and a receiving cavity is formed between the pin lock 22 and the outer wall of the connector 21. The front end of the receiving cavity is open. The receiving cavity is used to receive the bottom edge 14 of the pin. The inner wall of the pin lock has a pin lock thread 23. The pin 13 and the pin lock 22 are connected by threads. When the pin 13 is threadedly connected to the pin lock 22, the inner wall of the pin 13 is in close contact with the outer surface of the connector 21.

[0033] The connector 21 is provided with a push rod center hole groove 26. The front half of the push rod center hole groove 26 extends along the central axis of the connector 21, and the rear half extends inclined towards the outer wall of the connector 21 until it reaches the outer wall of the connector 21. The collar wire 15 can pass through the push rod center hole groove 26 and extend out of the connector 21.

[0034] The push rod 24 is cylindrical. A push rod limiting edge 25 is provided at the front end of the push rod 24 (i.e., where the push rod 24 and the connector 21 meet). The rear end face of the push rod limiting edge 25 is preferably perpendicular to the central axis of the push rod 24, which facilitates the limiting of the sleeve 31. The rear end face of the push rod 24 has a central screw hole for fixing the resetter 4.

[0035] The sleeve assembly 3 includes a sleeve 31 and a finger support 32. The sleeve 31 is cylindrical, and its inner diameter is slightly larger than the outer diameter of the push rod 24 but smaller than the outer diameter of the push rod limiting edge 25. The push rod 24 passes through the sleeve 31 and is rotatable within it. The front end face of the sleeve 31 abuts against the push rod limiting edge 25.

[0036] The sleeve 31 is provided with a collar thread fixing assembly on its exterior; the tail end of the collar thread 15 is fixed inside the collar thread fixing assembly. Specifically, the collar thread fixing assembly includes a clamping screw seat 34, which is fixedly disposed on the outer side wall of the sleeve 31; a through hole for the collar thread 15 to pass through is provided between the clamping screw seat 34 and the outer side wall of the sleeve 31; a screw hole 36 is also provided on the clamping screw seat 34, which is arranged radially along the sleeve 31; a recess 35 is provided on the outer surface of the sleeve 31 at a position corresponding to the screw hole 36; a clamping screw 33 passes through the screw hole 36, and the clamping screw 33 clamps the collar thread 15 at the recess 35 or between the clamping screw 33 and the inner wall of the clamping screw seat 34.

[0037] The surface shape of the recess 35 matches the shape of the screw-in end of the clamping screw 33, and the single-sided gap between the two sides of the clamping screw 33 and the inner wall of the clamping screw seat 34 is smaller than the diameter of the collar wire 15. Then, after the two ends of the collar wire 15 pass through the through hole of the clamping screw seat 34, the clamping screw 33 and the clamping screw seat 34 are tightened together. Thus, the collar wire 15 is either clamped between the clamping screw 33 and the sleeve 31 (i.e., at the recess 35) or between the clamping screw 33 and the inner wall of the clamping screw seat 34.

[0038] The finger support 32 is disposed on the outer wall of the sleeve 31 and is fixedly connected to the sleeve 31. The finger support 32 is ring-shaped, square, or elliptical.

[0039] The resetter 4 includes a reset spring 41, a spring cover 42, and a spring cover screw 43. The inner wall of the tail end of the sleeve 31 has a step, forming a reset spring seat 37. A push rod 24 passes through the sleeve 31, with its rear end extending partially out of the sleeve 31. The reset spring 41 is fitted onto the outer wall of the portion of the push rod 24 extending out of the sleeve 31. One end of the reset spring 41 abuts against the reset spring seat 37, and the other end abuts against the spring cover 42. The spring cover 42 is connected to the rear end face of the push rod 24, specifically detachably connected via the spring cover screw 43.

[0040] The working principle of this embodiment is as follows: After the device is installed and the return spring 41 is in the compressed state in the initial state, first fold the collar wire 15 in half, pass it through the straight needle tube 12 and needle plug 13 side by side, enter the connector 21, pass through the center hole groove of the push rod and extend out from the side opening of the connector 21, and then insert it into the through hole of the clamping screw seat 34, and use the clamping screw 33 to fix the two ends of the collar wire 15.

[0041] Then the syringe 12 can be pre-bent, such as... Figure 1 As shown, rotate the push rod 24 to adjust the bending direction of the collar 11 and the needle tube 12. Hold the sleeve 31 between your index and middle fingers and press it against the finger support 32. Press the spring cover 42 against your thumb and squeeze the finger support 32 with your index and middle fingers. Use an injection-like action to shrink the collar 11 and securely fit the broken instrument. At this time, pull the device outward to remove the broken instrument.

[0042] Example 2 This embodiment further defines the first example by specifying that the collar wire 15 is made of metal wire, polymer material, or ceramic filament. Other components in this embodiment, besides the collar wire 15, can be made of stainless steel, titanium alloy, or aluminum alloy.

[0043] Example 3 This embodiment further defines the first embodiment, wherein the needle tube 12 and the needle plug 13 are disposable syringe needles for single use. Before operation, the collar wire 15 can be threaded in and multiple sets can be prepared to facilitate quick replacement of the new collar assembly 1 after a failed attempt to remove a broken instrument.

[0044] The above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A device for removing a broken medical instrument collar, characterized in that, include: A collar assembly, the collar assembly including a collar wire, the collar wire being bent to form a collar, the collar being used to retrieve a broken instrument; A connecting component, which is connected to the collar assembly; A sleeve assembly, which is connected to the connecting assembly; A resetter is disposed at the tail of the sleeve assembly. By pushing the resetter, the resetter, through the sleeve assembly and the connecting assembly, tightens the collar onto the broken instrument, thereby pulling the broken instrument out.

2. The medical instrument breakage removal ring device according to claim 1, characterized in that, The sleeve assembly includes a sleeve, and a collar wire fixing assembly is provided on the outside of the sleeve; the tail end of the collar wire is fixed inside the collar wire fixing assembly.

3. The medical instrument breakage removal ring device according to claim 2, characterized in that, The connecting assembly includes a push rod and a connector. The front end of the push rod is connected to the connector. The connector is externally connected to the collar assembly. A push rod center slot is provided at the center of the connector. The collar wire passes through the push rod center slot and is fixed in the collar wire fixing assembly. The push rod passes through the sleeve and can rotate and translate within the sleeve.

4. The medical instrument breakage removal ring device according to claim 3, characterized in that, A push rod limiting edge is provided at the junction of the push rod and the connector, and the front end face of the sleeve abuts against the push rod limiting edge.

5. The medical instrument breakage removal ring device according to claim 2, characterized in that, The reset device includes a reset spring and a spring cover. A reset spring seat is provided on the inner side wall of the tail end of the sleeve. One end of the reset spring abuts against the reset spring seat, and the other end of the reset spring abuts against the spring cover. The spring cover is connected to the rear end face of the push rod. The resetter also includes a spring cover screw, and the spring cover is detachably connected to the rear end face of the push rod via the spring cover screw.

6. The medical instrument breakage removal ring device according to claim 2, characterized in that, The collar thread fixing assembly includes a clamping screw seat, which is fixedly disposed on the outer side wall of the sleeve. The clamping screw seat is U-shaped and has a through hole between it and the outer side wall of the sleeve for the collar thread to pass through. The clamping screw seat is also provided with a screw hole, which is arranged radially along the sleeve. A recess is provided on the outer surface of the sleeve at a position corresponding to the screw hole. A clamping screw passes through the screw hole and clamps the collar thread in the recess or between the clamping screw and the inner wall of the clamping screw seat.

7. The medical instrument breakage removal ring device according to claim 2, characterized in that, The outer wall of the sleeve is also provided with a finger support, which is ring-shaped, square, or elliptical.

8. The medical instrument breakage removal ring device according to claim 3, characterized in that, The collar assembly also includes a needle tube and a needle plug. One end of the needle tube is connected to the front end of the needle plug, and the outer surface of the rear end of the needle plug is provided with a bottom edge of the needle plug, which consists of two oppositely arranged protrusions. The outer wall of the connector is provided with a 180° folded pin lock, the pin lock folds outward and forward from the outer wall of the connector, and there is a receiving cavity between the pin lock and the outer wall of the connector, the front end of the receiving cavity is open; The inner wall of the needle bolt lock has internal threads. After the two protrusions are screwed into the threads inside the needle bolt lock, they cooperate with the threads inside the needle bolt lock 22 and lock the needle bolt.

9. The medical instrument breakage removal ring device according to claim 8, characterized in that, The needle plug is a hollow cone with an open tip, and the connector is conical. When the needle plug is threadedly connected to the connector, the inner wall of the needle plug is in close contact with the outer surface of the connector.

10. The medical instrument breakage removal ring device according to claim 1, characterized in that, The collar wire is made of metal wire, polymer material or ceramic filament.

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