CN213345820U

CN213345820U - Anti-drop medical cutter and medical operation device

Info

Publication number: CN213345820U
Application number: CN202021847409.4U
Authority: CN
Inventors: 郭毅军; 赵正; 覃聪
Original assignee: Chongqing Xishan Science and Technology Co Ltd
Current assignee: Chongqing Xishan Science and Technology Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-04
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a medical cutter of anti-drop and medical surgical device, the medical cutter of anti-drop includes: the outer cutter tube assembly comprises an outer cutter tube and a fixing sleeve, and the rear end of the outer cutter tube is inserted and fixed in the front end of the fixing sleeve; the inner cutter tube assembly comprises an inner cutter tube and a connector, and the rear end of the inner cutter tube extends out of the rear end of the outer cutter tube and is connected with the front end of the connector; the outer cutter tube component further comprises a connector, the connector is sleeved in the rear end of the fixed sleeve, a first interference surface is arranged on the inner wall of the connector, the front end of the connector is located in the rear end of the fixed sleeve, a second interference surface is arranged at the front end of the connector, and the first interference surface and the second interference surface interfere with each other to prevent the connector from sliding out of the rear end of the fixed sleeve. The utility model discloses a medical cutter of anti-drop prevents the connector from the rear end roll-off of fixed cover through anti-disengaging structure, and then can prevent when the cutter transports and when installing the cutter that interior cutter assembly follows outer cutter assembly roll-off.

Description

Anti-drop medical cutter and medical operation device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a medical cutter of anti-drop and medical operation device.

Background

Medical surgical devices for cutting body tissue such as joints generally include a handle and a knife including an outer blade assembly and an inner blade assembly that is nested within and rotatable relative to the outer blade assembly. In order to prevent cross infection, the knife is usually a disposable article at present, the knife is produced and transported separately, and the knife is arranged on a handle by a doctor before operation. Because interior knife pipe assembly and outer knife pipe assembly are swing joint, all probably lead to interior knife pipe assembly to break away from in the outer knife pipe assembly when cutter transportation process cutter received external force and when installing the cutter before the use, influence the normal use of cutter.

Disclosure of Invention

To the above-mentioned prior art current situation, the utility model aims to solve a technical problem lie in providing a medical cutter of anti-drop that can prevent interior cutter assembly from droing from outer cutter assembly. Another technical problem to be solved by the present invention is to provide a medical surgical device with the above anti-drop medical knife.

In order to solve the technical problem, the utility model provides an anti-drop medical cutter, include: the outer cutter tube assembly comprises an outer cutter tube and a fixing sleeve, and the rear end of the outer cutter tube is inserted and fixed into the front end of the fixing sleeve; the inner cutter tube assembly comprises an inner cutter tube and a connector, the inner cutter tube is sleeved in the outer cutter tube and can rotate relative to the outer cutter tube, and the rear end of the inner cutter tube extends out of the rear end of the outer cutter tube and is connected with the front end of the connector; outer cutter pipe subassembly still includes the connector, the connector endotheca in the rear end of fixed cover be provided with first interference face on the inner wall of connector, the front end of connector is located in the rear end of fixed cover the front end of connector is provided with the second and interferes the face, first interference face with the second interferes the face mutual interference in order to prevent the connector is followed the rear end roll-off of fixed cover.

The utility model discloses a medical cutter of anti-drop prevents the connector from the rear end roll-off of fixed cover through anti-disengaging structure, and then can prevent when the cutter transports and when installing the cutter that interior cutter assembly follows outer cutter assembly roll-off.

In one embodiment, the coupling comprises a cylinder body, the cylinder body is inserted into the rear end of the fixing sleeve, the outer diameter of the cylinder body is in interference fit with the inner diameter of the rear end of the fixing sleeve, at least one inner boss is arranged on the inner wall of the cylinder body, and the front end face of the inner boss is the first interference surface.

In one embodiment, the tail end of the fixing sleeve is provided with at least one clamping hole, the outer wall of the barrel body is provided with at least one outer boss, and the at least one outer boss is clamped in the at least one clamping hole respectively.

In one embodiment, the at least one outer boss and the at least one inner boss are offset from each other in a radial direction of the barrel portion.

In one embodiment, the number of the outer bosses and the number of the inner bosses are two, and the two inner bosses and the two outer bosses are arranged at intervals one by one in the circumferential direction of the barrel part.

In one embodiment, the rear end of the barrel portion extends beyond the rear end of the harness, and the coupling further comprises at least one ring of sealing ring disposed on the outer wall of the rear end of the barrel portion, the sealing ring having an outer diameter greater than the outer diameter of the rear end of the harness.

In one embodiment, the inner bore of the barrel portion is a stepped bore including a large-diameter bore and a small-diameter bore connected in series from front to back, and the at least one inner boss is disposed on an inner wall of the small-diameter bore near an end of the large-diameter bore.

In one embodiment, the coupling member is made of a soft material.

In one embodiment, the front end of the connector is provided with an annular groove, and the front groove wall of the groove is the second interference surface.

The utility model provides a medical operation device, including handle and cutter, the front end of handle is provided with the jack, be provided with drive arrangement in the handle, the cutter is foretell anti-drop medical cutter, anti-drop medical cutter fixed cover can be inserted in the jack, anti-drop medical cutter the connector with drive arrangement's output is connected.

The advantageous effects of the additional features of the present invention will be explained in the detailed description of the preferred embodiments of the present description.

Drawings

Fig. 1 is a schematic perspective view of an anti-falling medical knife according to a first embodiment of the present invention;

FIG. 2 is a sectional structural view of the anti-drop medical cutter shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at I;

FIG. 4 is a schematic perspective view of the coupling member of the anti-drop medical knife shown in FIG. 1;

fig. 5 is a schematic perspective view of a coupling member of an anti-falling medical knife according to a second embodiment of the present invention;

fig. 6 is a schematic structural view of the medical surgical device having the anti-falling medical knife shown in fig. 1.

Description of reference numerals: 10. an outer cutter tube; 12. cutting a window; 20. fixing a sleeve; 21. a clamping hole; 24. a coupling member; 241. a barrel portion; 242. an inner boss; 243. a first interference surface; 244. a seal ring; 245. an outer boss; 246. a large diameter bore; 247. a small diameter bore; 30. an inner cutter tube; 32. a cutter head; 40. a connector; 42. a groove; 421. a second interference surface; 50. a handle; 52. and (4) inserting the jack.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

Fig. 1 is a schematic perspective view of an anti-falling medical cutting tool according to a first embodiment of the present invention, and fig. 2 is a structural view of a cross-sectional view of the anti-falling medical cutting tool shown in fig. 1. As shown in fig. 1 and 2, the anti-falling medical tool as an example is a planer tool or a grinding head, and the like, which includes an outer tool tube assembly and an inner tool tube assembly, wherein the outer tool tube assembly includes an outer tool tube 10, a fixing sleeve 20 and a coupling member 24, the outer tool tube 10 has a head end and a tail end, a cutting window 12 is provided on a tube wall of the head end of the outer tool tube 10, a rear end of the outer tool tube 10 is inserted and fixed into a front end of the fixing sleeve 20, the coupling member 24 is sleeved in a rear end of the fixing sleeve, and a first interference surface 243 (see fig. 3) is provided on an inner wall of the coupling member.

The inner cutter tube component comprises an inner cutter tube 30 and a connector 40, the inner cutter tube 30 is arranged in the outer cutter tube 10 and can rotate relative to the outer cutter tube 10, a cutter head 32 is arranged at the front end of the inner cutter tube 30, when the inner cutter tube 30 rotates, the cutter head 32 cuts tissue extending into the cutting window 12, the tail end of the inner cutter tube 30 extends out from the tail end of the outer cutter tube 10, one end of the connector 40 is connected with the tail end of the inner cutter tube 30, the other end of the connector is used for being connected with a driving device in the handle 50, and the inner cutter tube 30 is driven by the driving device to rotate relative to the outer cutter tube 10.

The front end of the connector 40 is located in the rear end of the fixing sleeve 20, a second interference surface 421 (see fig. 3) is arranged at the front end of the connector 40, the second interference surface 421 is located at the front side of the first interference surface 243, and the first interference surface 243 and the second interference surface 421 interfere with each other to prevent the connector 40 from sliding out of the rear end of the fixing sleeve 20, so that the inner cutter tube assembly can be prevented from sliding out of the outer cutter tube assembly when the cutter is transported and installed. This anti-drop structure realizes anti-drop through two interference surface cooperations, has simple structure's advantage. Also, by providing the first interference surface 243 and the coupling 24 together, the structure of the tool can be simplified.

As shown in fig. 4, the coupling 24 includes a cylindrical body 241, the cylindrical body 241 is inserted into the rear end of the fixing sleeve 20, the outer diameter of the cylindrical body 241 is in interference fit with the inner diameter of the rear end of the fixing sleeve 20, at least one inner boss 242 arranged along the circumferential direction is provided on the inner wall of the cylindrical body 241, and the front end surface of the inner boss 242 is a first interference surface 243. In the present embodiment, the number of the inner bosses 242 is two, and may be one or more than two.

Preferably, the tail end of the fixing sleeve 20 is provided with at least one clamping hole 21, the outer wall of the cylinder 241 is provided with at least one outer boss 245, and the outer bosses 245 are respectively clamped in the clamping holes 21, so as to limit the cylinder 241.

Preferably, the rear end of the cylinder 241 extends out of the rear end of the fixing sleeve 20, and the outer wall of the rear end of the cylinder 241 is provided with at least one ring of sealing ring 244, and the outer diameter of the sealing ring 244 is larger than that of the rear end of the fixing sleeve 20. The sealing ring 244 engages the inner wall of the receptacle 52 of the handle 50 to sealingly connect the hub 20 to the handle 50. In this embodiment, two sealing rings 244 are provided, and the two sealing rings 244 are axially spaced to increase the sealing effect.

As shown in fig. 4, preferably, the inner bore of the cylinder portion 241 is a stepped bore including a large-diameter bore 246 and a small-diameter bore 247 connected in series from front to rear, and at least one inner boss 242 is provided on an inner wall of the small-diameter bore 247 near an end of the large-diameter bore 246. The large diameter hole 246 of the barrel portion 241 can increase the space between the barrel portion 241 and the front end of the connecting head 40, and reduce the risk of interference between the two parts during normal use.

Preferably, the coupling member 24 is made of a soft material (e.g., silicone) to increase the sealing effect and facilitate deformation for removal.

As shown in fig. 2 and 3, the front end of the connecting head 40 is provided with an annular groove 42, and a front groove wall of the groove 42 is a second interference surface 421.

Fig. 5 is a schematic perspective view of a coupling member 24 of an anti-falling medical knife according to a second embodiment of the present invention, in which the coupling member 24 of the present embodiment has substantially the same structure as the first embodiment, except that: the outer boss 245 and the inner boss 242 in this embodiment are staggered from each other in the radial direction of the barrel 241, and the design of the mutual staggering enables multidimensional stress to be applied, stability of the reinforcing part 241 and the connecting head 40 can be enhanced to a certain extent, and the processing is convenient. Preferably, the number of the outer bosses 245 and the inner bosses 242 is two, and the two inner bosses 242 and the two outer bosses 245 are arranged at intervals one by one in the circumferential direction of the cylinder portion 241.

Fig. 6 is a schematic structural view of a medical surgical device having a cutter in the above embodiment, and as shown in fig. 6, the medical surgical device is an articular joint cutting surgical device which comprises a handle 50 and the cutter in the above embodiment, a socket 52 is provided at the front end of the handle 50, a fixing sleeve 20 of the cutter is inserted into the socket 52, a sealing ring 244 of a coupling member 24 is in sealing fit with the inner wall of the socket 52, and a connecting member is connected with an output end of a driving device (not shown).

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. An anti-drop medical tool, comprising:

the outer cutter tube assembly comprises an outer cutter tube and a fixing sleeve, and the rear end of the outer cutter tube is inserted and fixed into the front end of the fixing sleeve;

the inner cutter tube assembly comprises an inner cutter tube and a connector, the inner cutter tube is sleeved in the outer cutter tube and can rotate relative to the outer cutter tube, and the rear end of the inner cutter tube is connected with the front end of the connector;

its characterized in that, outer cutter tube subassembly still includes the connector, the connector endotheca in the rear end of fixed cover be provided with first interference face on the inner wall of connector, the front end of connector is located in the rear end of fixed cover the front end of connector is provided with the second and interferes the face, the second is interfered the face and is located the front side of first interference face, first interference face with the second interferes the face mutual interference in order to prevent the connector is followed the rear end roll-off of fixed cover.

2. The anti-drop medical tool according to claim 1, wherein the coupling member includes a cylindrical body portion inserted into the rear end of the fixing sheath, and an outer diameter of the cylindrical body portion is in interference fit with an inner diameter of the rear end of the fixing sheath, and at least one inner boss is provided on an inner wall of the cylindrical body portion, and a front end surface of the inner boss is the first interference surface.

3. The anti-drop medical tool according to claim 2, wherein the tail end of the fixing sleeve is provided with at least one locking hole, the outer wall of the cylinder body is provided with at least one outer boss, and the at least one outer boss is respectively locked in the at least one locking hole.

4. The anti-drop medical tool of claim 3, wherein the at least one outer boss and the at least one inner boss are offset from each other in a radial direction of the barrel portion.

5. The anti-drop medical cutter according to claim 4, wherein the number of the outer bosses and the number of the inner bosses are two, and the two inner bosses and the two outer bosses are arranged one by one at intervals in the circumferential direction of the barrel portion.

6. The anti-drop medical tool according to claim 2, wherein the rear end of the cylinder portion protrudes beyond the rear end of the harness, and the coupling further comprises at least one ring of seal ring provided on an outer wall of the rear end of the cylinder portion, the seal ring having an outer diameter larger than that of the rear end of the harness.

7. The anti-drop medical tool according to claim 2, wherein the inner bore of the cylinder portion is a stepped bore including a large-diameter bore and a small-diameter bore connected in series from front to rear, and the at least one inner boss is provided on an inner wall of the small-diameter bore near an end of the large-diameter bore.

8. The anti-drop medical knife according to claim 1, wherein the coupling member is made of a soft material.

9. The anti-drop medical cutter according to claim 1, wherein the front end of the connector is provided with an annular groove, and the front groove wall of the groove is the second interference surface.

10. A medical operation device, comprising a handle and a cutter, wherein the front end of the handle is provided with a jack, and the handle is internally provided with a driving device, characterized in that the cutter is the anti-drop medical cutter as claimed in any one of claims 1 to 9, the fixing sleeve of the anti-drop medical cutter can be inserted into the jack, and the connector of the anti-drop medical cutter is connected with the output end of the driving device.