CN219021554U

CN219021554U - Special protective tube sleeve capable of turning for medical instrument

Info

Publication number: CN219021554U
Application number: CN202222255905.6U
Authority: CN
Inventors: 徐苗; 吴斌武; 李�杰
Original assignee: Hangzhou Nanyu Medical Instrument Co ltd
Current assignee: Hangzhou Nanyu Medical Instrument Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-05-16
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a special turnable protective tube sleeve for medical instruments, which aims at providing a special turnable protective tube sleeve for medical instruments, wherein the inner space of the special turnable protective tube sleeve is not easy to generate irregular deformation. The beneficial effects of the utility model are as follows: the turning of the medical instrument is facilitated; the size of the inner space of the steering tube is uniform, so that the aim that the inner space of the steering tube is not easy to generate irregular deformation is fulfilled; the turning device is beneficial to the turning of the steering tube in any direction, and improves the turning flexibility of the medical instrument in actual use; the steering tube is beneficial to steering in any direction, and meanwhile, the connection between parts is firm; the surface smoothness of the joint pipe is improved, and the safety performance during use is improved; the surface flatness of the protective sleeve is improved, and the medical instrument can pass through and turn to smoothly.

Description

Special protective tube sleeve capable of turning for medical instrument

Technical Field

The utility model relates to the technical field related to a protective tube sleeve, in particular to a special turnable protective tube sleeve for medical equipment.

Background

In recent years, with the change of living environment and living habit, the problems of human bodies are more and more increased, so that the technology of flossing surgical operation is more and more advanced and mature, and meanwhile, the pain of people in operation is gradually reduced, thereby being beneficial to improving the postoperative recovery effect. Therefore, in most procedures, an angled rotary tissue cutting instrument is often used to ensure that the procedure is performed successfully.

Angularly rotating tissue cutting instruments have been widely used in a variety of surgical procedures to cut anatomical tissue at a surgical site within a patient. An angularly-rotating tissue-cutting instrument generally includes an elongated, angled outer member and an elongated, flexible inner member rotatably disposed within the angled outer member. A cutting element at the distal end of the inner member is exposed from an opening at the distal end of the outer member to cut anatomical tissue at the surgical site as the inner member rotates within the outer member. The inner member is typically rotated within the outer member by an electrically powered surgical handpiece coupled to the outer member and the proximal end of the inner member, wherein the handpiece is maintained outside of the patient's body. The outer member has one or more angled, curved or bent regions along its length to provide an angled configuration that aids in positioning the cutting element at the surgical site when the instrument is introduced into the patient's body, and particularly when the instrument is introduced through a narrow or small-sized natural or artificially-formed access opening in the patient's body. The inner member is provided with one or more flexible regions to reside within one or more angled, curved or bent regions of the outer member for transmitting torque to rotate the cutting element while conforming to the angled configuration of the outer member. The angled configuration of the outer member is particularly advantageous to facilitate positioning of the cutting element at the surgical site where a non-linear path in the body exists forming an access opening to the surgical site. In this case, the angled rotary tissue cutting instrument is generally more suitable for easier and faster access to the surgical site and less traumatic to the patient than if the outer member were a longitudinally straight rotary tissue cutting instrument.

In many surgical procedures performed using rotary tissue cutting instruments, the inner lumen of the inner member is used to deliver suction to the surgical site to aspirate anatomical tissue and/or fluids through the inner member. In addition, an annular gap or clearance between the inner diameter of the outer member and the outer diameter of the inner member is typically used as an irrigation channel for supplying irrigation fluid to the surgical site. While rotary tissue cutting instruments having curved or bendable shafts have been used for some time, these shafts typically employ a single helically wound strip of material to impart flexibility while transmitting torque. Unfortunately, spirally wound shafts and couplings tend to unwind when rotated in the opposite direction to their winding, such that torque can only be effectively transferred in one direction. When the inner member rotatably conforms to the angled configuration of the outer member upon rotation, flushing losses may occur as the inner member includes a helical cut or coil of clearance formed along the flexible region. In many applications, the loss of flushing can be dangerous. For example, in nerve tumor ablation devices, microelectromechanical (MEM) components are often used, where loss of irrigation may cause the device to clog, resulting in failure. In other devices, such as in an ear-nose-throat (ENT) mini-remover, the device may become less effective due to the loss of irrigation caused by insufficient saline at the cutting bit.

Angularly rotating tissue cutting instruments have been very useful. There is a need for an elongate tubular assembly that maintains adequate strength and rigidity while transmitting torque through a flexible region and prevents loss of irrigation, particularly considering that an angled rotary tissue cutting instrument must often be designed to operate at high rotational speeds and withstand the forces exerted when cutting hard or tough anatomical tissue.

Chinese patent publication No. CN 107666871A, publication No. 2018, 2, 6, discloses an inner member rotatable within an angled outer tubular member of a rotary surgical cutting instrument, comprising: a first tubular member, the first tubular member comprising: a rigid proximal portion comprised of a first material, the proximal portion comprising a hub and extending to a distal engagement end; a flexible intermediate portion comprised of a second material different from the first material, the flexible intermediate portion comprising a proximal end and a distal end; and a rigid distal portion comprised of the first material, the distal portion terminating at a distal end configured to couple with a cutting bit and extending to a proximal engagement end, wherein the flexible intermediate portion extends between the proximal portion and the distal portion, and the proximal end of the flexible intermediate portion is fixedly coupled to the proximal portion at the distal engagement end, and the distal end of the flexible intermediate portion is fixedly coupled to the distal portion at the proximal engagement end; and a second tubular member coaxially disposed about the first tubular member at least about the flexible intermediate portion, the second tubular member fixedly attached to the proximal and distal portions and allowing the first tubular member to bend while rotating relative to the outer tubular member.

The second tubular member is helically cut in a first direction along a central section, wherein a first end of the second tubular member is fixedly attached to the proximal portion of the first tubular member and a second end of the second tubular member is fixedly attached to the distal portion of the first tubular member, and wherein the central section disposed about the intermediate portion defines a flexible region that allows the inner member to flex when rotated within the outer tubular member.

An inner member, further comprising: a third tubular member coaxially disposed about the second tubular member, wherein the third tubular member is helically cut in a second direction along a central section, and wherein the central section of the third tubular member is disposed over the central section of the second tubular member.

As is apparent from the above patent, the flexible portion of the tube is composed of a second tubular member coaxially disposed around the first tubular member and a third tubular member coaxially disposed around the second tubular member, and both the first tubular member and the second tubular member are spirally cut on the center sections thereof, whereby it is seen that the above patent achieves bending by coaxially disposing several sections of the spirally cut tubular members one by one, which means is capable of maintaining sufficient strength and rigidity when torque is transmitted through the flexible region, but when bending is performed, displacement deviation is easily generated by the spirally cut portion, causing irregular deformation of the inner space thereof, thereby making the operation space of the angularly rotating tissue cutting instrument limited, which is disadvantageous for accurate operation.

Disclosure of Invention

The utility model provides a special turnable protective pipe sleeve for a medical instrument, which is difficult to irregularly deform in the inner space, in order to overcome the defect that the inner space of a pipe fitting is easy to irregularly deform when the pipe fitting is bent in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a special protection pipe box that can turn of medical instrument, it includes protection tube one, protection tube two and can follow the steering tube of arbitrary direction turn, the one end and the protection tube one end of steering tube are connected, the other end and the protection tube two of steering tube are connected, the steering tube is two-phase intercommunication with protection tube one and protection tube respectively, the steering tube is connected gradually by a plurality of joint pipe and is formed.

One end of the steering tube is connected with the protection tube, the other end of the steering tube is connected with the protection tube II, the steering tube is respectively communicated with the protection tube I and the protection tube II, and the steering tube is formed by sequentially connecting a plurality of joint tubes. The steering tube is respectively communicated with the first protection tube and the second protection tube so as to facilitate the passing of medical instruments, and the steering tube is favorable for forming a certain angle between the first protection tube and the second protection tube, so that the medical instruments in the tube can be steered according to actual requirements and are favorable for the operation of cutting the instruments; the steering tube is formed by sequentially connecting a plurality of joint tubes, and because the joint tubes are of tubular structures all the time, the steering tube only rotates a certain angle through the connecting part between every two adjacent joint tubes when being bent, so that the size of the internal space of the steering tube is uniform, the purpose that the internal space is not easy to produce irregular deformation is achieved, and the accurate operation of medical instruments is facilitated.

Preferably, one end of the joint pipe is provided with a plurality of buckling blocks, the plurality of buckling blocks are uniformly distributed along the circumference of the joint pipe, the other end of the joint pipe is provided with a plurality of buckling grooves matched with the buckling blocks one by one, one Guan Jieguan of the buckling grooves is matched and connected with the buckling groove on the joint pipe adjacent to one end of the buckling blocks, and the joint pipe is matched and connected with the buckling blocks on the joint pipe adjacent to the other end of the buckling grooves. The joint pipes are sequentially connected with the buckling blocks in a matching manner through the buckling grooves, so that twisting of the steering pipe in any direction is facilitated, and the turning flexibility of the medical instrument in actual use is improved.

Preferably, the end parts of the first protection tube and the second protection tube are respectively provided with a plurality of buckling grooves matched with the buckling blocks one by one, the first protection tube is connected with the buckling blocks on the adjacent joint tubes in a matched mode through the buckling grooves, and the second protection tube is connected with the buckling blocks on the adjacent joint tubes in a matched mode through the buckling grooves. The first protection pipe and the second protection pipe are connected with the adjacent joint pipes in the same way as the joint pipes, so that on one hand, unified processing is facilitated, and particularly when the buckling blocks and the buckling grooves are respectively formed by adopting laser cutting, only the repeated operation of unified cutting paths is needed, and the improvement of the working efficiency is facilitated; on the other hand, in order to further improve the flexibility of turning.

Preferably, one end of the buckling block is fixedly connected with the joint pipe and integrally formed, the other end of the buckling block is circular, two arc-shaped grooves are formed in one end of the buckling block, which is fixedly connected with the joint pipe, the two arc-shaped grooves are respectively formed in the left side and the right side of the buckling block, one end of the arc-shaped grooves is in circular arc-shaped uniform transition towards the end of the joint pipe, the other end of the arc-shaped grooves is tangent to one end of the buckling block, which is provided with two arc-shaped grooves, is located at the opening end of the arc-shaped grooves, one end of the buckling block, which is circular, is located at the bottom of the arc-shaped grooves, and a gap is formed between one end of the buckling block, which is circular, and the bottom of the arc-shaped grooves. Because the buckling block is matched with the buckling groove, one end of the buckling block, provided with two arc grooves, is positioned in the opening end of the arc groove, and one end of the buckling block, which is circular, is positioned at the bottom of the arc groove, so that the width of the opening end of the buckling groove is smaller than the diameter of the bottom of the buckling groove, one end of the buckling block, which is circular, is limited in the bottom of the buckling groove, and cannot be separated from the opening end of the buckling groove, and meanwhile, a plurality of buckling blocks which are uniformly distributed along the circumferential direction of the joint pipe are matched with a plurality of buckling grooves one by one, so that the buckling blocks cannot be separated from the side surface of the buckling groove, and finally, the steering pipe can be steered in any direction, and meanwhile, the connection between parts is firm; one end of the buckling block is circular, and a gap is formed between the end of the buckling block and the bottom of the arc-shaped groove, so that the steering tube can turn conveniently.

Preferably, the inner side wall of the buckling block and the inner side wall of the joint pipe are on the same arc surface, and the outer side wall of the buckling block and the outer side wall of the joint pipe are on the same arc surface. Is beneficial to improving the surface smoothness of the joint pipe and the safety performance during use.

Preferably, the inner diameter of the joint tube is the same as the inner diameters of the first protection tube and the second protection tube, and the outer diameter of the joint tube is the same as the outer diameters of the first protection tube and the second protection tube. The surface flatness of the protective sleeve is improved, and the medical instrument can pass through and turn to smoothly.

The beneficial effects of the utility model are as follows: the turning of the medical instrument is facilitated; the size of the inner space of the steering tube is uniform, so that the aim that the inner space of the steering tube is not easy to generate irregular deformation is fulfilled; the turning device is beneficial to the turning of the steering tube in any direction, and improves the turning flexibility of the medical instrument in actual use; the processing is convenient, and the working efficiency is improved; the steering tube is beneficial to steering in any direction, and meanwhile, the connection between parts is firm; the surface smoothness of the joint pipe is improved, and the safety performance during use is improved; the surface flatness of the protective sleeve is improved, and the medical instrument can pass through and turn to smoothly.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the construction of the protective sleeve during cornering;

FIG. 3 is a partial exploded view of the present utility model;

fig. 4 is an enlarged view of the structure at a in fig. 3;

fig. 5 is an enlarged view of the structure at B in fig. 2.

In the figure: 1. the novel steering device comprises a first protection pipe, a second protection pipe, a steering pipe, a 4, guan Jieguan, a 5, a buckling block, a 6, a buckling groove, a 7, an arc-shaped groove and a 8, wherein the first protection pipe, the second protection pipe, the steering pipe, the 4, guan Jieguan, the 5, the buckling groove, the 7, the arc-shaped groove and the 8, respectively.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

In the embodiment shown in fig. 1, 2 and 3, a special protective tube sleeve capable of turning for a medical instrument comprises a protective tube 1, a protective tube 2 and a steering tube 3 capable of turning along any direction, one end of the steering tube 3 is connected with the protective tube 1, the other end of the steering tube 3 is connected with the protective tube 2, the steering tube 3 is respectively communicated with the protective tube 1 and the protective tube 2, and the steering tube 3 is formed by sequentially connecting a plurality of joint tubes 4.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, one end of the joint pipe 4 is provided with a plurality of buckling blocks 5, the plurality of buckling blocks 5 are uniformly distributed along the circumference of the joint pipe 4, the other end of the joint pipe 4 is provided with a plurality of buckling grooves 6 matched with the buckling blocks 5 one by one, one joint pipe 4 is in matched connection with the buckling grooves 6 on the joint pipe 4 adjacent to one end of the joint pipe through the buckling blocks 5, and the joint pipe 4 is in matched connection with the buckling blocks 5 on the joint pipe 4 adjacent to the other end of the joint pipe through the buckling grooves 6.

As shown in fig. 1, 2, 3 and 4, the end parts of the first protection tube 1 and the second protection tube 2 are respectively provided with a plurality of buckling grooves 6 matched with the buckling blocks 5 one by one, the first protection tube 1 is connected with the buckling blocks 5 on the adjacent joint tube 4 in a matched manner through the buckling grooves 6, and the second protection tube 2 is connected with the buckling blocks 5 on the adjacent joint tube 4 in a matched manner through the buckling grooves 6.

As shown in fig. 4 and 5, one end of the buckling block 5 is fixedly connected with the joint pipe 4 and integrally formed, the other end of the buckling block 5 is circular, two arc-shaped grooves 7 are formed in one end of the buckling block 5 fixedly connected with the joint pipe 4, the two arc-shaped grooves 7 are respectively positioned on the left side and the right side of the buckling block 5, one end of the arc-shaped grooves 7 is in arc-shaped uniform transition towards the end of the joint pipe 4, the other end of the arc-shaped grooves 7 is tangent with one end of the buckling block 5, provided with the two arc-shaped grooves 7, is positioned at the opening end of the arc-shaped grooves 7, one end of the buckling block 5, which is circular, is positioned at the bottom of the arc-shaped grooves 7, and a gap 8 is formed between the circular end of the buckling block 5 and the bottom of the arc-shaped grooves 7.

As shown in fig. 1, 2, 3, 4 and 5, the inner side wall of the fastening block 5 and the inner side wall of the joint pipe 4 are on the same arc surface, and the outer side wall of the fastening block 5 and the outer side wall of the joint pipe 4 are on the same arc surface.

As shown in fig. 1, 2, 3, 4 and 5, the inside diameter of the joint pipe 4 is the same as the inside diameters of the protection pipe 1 and the protection pipe 2, respectively, and the outside diameter of the joint pipe 4 is the same as the outside diameters of the protection pipe 1 and the protection pipe 2, respectively.

The steering tube 3 is formed by sequentially connecting a plurality of joint tubes 4, and because the joint tubes 4 are of tubular structures all the time, when the steering tube 3 is bent, the steering tube 3 only rotates a certain angle through the connecting part between every two adjacent joint tubes 4, so that the size of the inner space of the steering tube 3 is uniform, and the aim that the inner space is not easy to generate irregular deformation is fulfilled.

Because the buckling block 5 is matched with the buckling groove 6, one end of the buckling block 5 provided with two arc-shaped grooves 7 is positioned in the opening end of the arc-shaped groove 7, and one end of the buckling block 5 with a circular shape is positioned at the bottom of the arc-shaped groove 7, so that the width of the opening end of the buckling groove 6 is smaller than the diameter of the bottom of the buckling groove 6, one end of the buckling block 5 with a circular shape is limited in the bottom of the buckling groove 6, the buckling block cannot be separated from the opening end of the buckling groove 6, and meanwhile, a plurality of buckling blocks 5 which are uniformly distributed along the circumferential direction of the joint pipe 4 are matched with a plurality of buckling grooves 6 one by one, so that the buckling blocks 5 cannot be separated from the side surface of the buckling groove 6, and finally, the steering pipe 3 is favorably steered in any direction, and meanwhile, the connection among parts is firm; the buckling block 5 is in a circular shape, and a gap is formed between one end of the buckling block and the bottom of the arc-shaped groove 7, so that the steering tube 3 can turn. Therefore, the joint pipes 4 are sequentially connected with the buckling blocks 5 and the buckling grooves 6 in a matched mode, twisting of the steering pipe 3 in any direction is facilitated, and the medical instrument sequentially passes through the first protection pipe 1, the steering pipe 3 and the second protection pipe 2 to perform related operation, so that the turning flexibility of the medical instrument in actual use can be improved.

Claims

1. The utility model provides a special protection pipe box that can turn of medical instrument, characterized by, including protection pipe one (1), protection pipe two (2) and can follow the steering tube (3) of arbitrary direction turn, the one end and the protection pipe one (1) of steering tube (3) are connected, the other end and the protection pipe two (2) of steering tube (3) are connected, steering tube (3) are linked together with protection pipe one (1) and protection pipe two (2) respectively, steering tube (3) are connected gradually by a plurality of joint pipe (4) and are formed.

2. The special turnable protective tube sleeve for the medical instrument according to claim 1, wherein one end of the joint tube (4) is provided with a plurality of buckling blocks (5), the plurality of buckling blocks (5) are uniformly distributed along the circumference of the joint tube (4), the other end of the Guan Jieguan (4) is provided with a plurality of buckling grooves (6) which are matched with the buckling blocks (5) one by one, one Guan Jieguan (4) is connected with the buckling grooves (6) on the Guan Jieguan (4) adjacent to one end of the buckling blocks (5), and the joint tube (4) is connected with the buckling blocks (5) on the Guan Jieguan (4) adjacent to the other end of the joint tube through the buckling grooves (6) in a matched mode.

3. The special turnable protective tube sleeve for the medical instrument according to claim 2, wherein a plurality of buckling grooves (6) matched with the buckling blocks (5) one by one are formed in the end parts of the first protective tube (1) and the second protective tube (2), the first protective tube (1) is connected with the buckling blocks (5) on the adjacent Guan Jieguan (4) in a matched mode through the buckling grooves (6), and the second protective tube (2) is connected with the buckling blocks (5) on the adjacent Guan Jieguan (4) in a matched mode through the buckling grooves (6).

4. The special turnable protective tube sleeve for the medical instrument according to claim 2, wherein one end of the buckling block (5) is fixedly connected with the Guan Jieguan (4) and integrally formed, the other end of the buckling block (5) is circular, two arc-shaped grooves (7) are formed in one end of the buckling block (5) fixedly connected with the joint tube (4), the two arc-shaped grooves (7) are respectively positioned on the left side and the right side of the buckling block (5), one end of the arc-shaped grooves (7) is uniformly transited in an arc shape to the end of the joint tube (4), the other end of the arc-shaped grooves (7) is tangent to the circular end of the buckling block (5), one end of the buckling block (5) provided with the two arc-shaped grooves (7) is positioned at the opening end of the arc-shaped grooves (7), one end of the buckling block (5) is positioned at the bottom of the arc-shaped grooves (7), and a gap (8) is formed between the circular end of the buckling block (5) and the bottom of the arc-shaped grooves (7).

5. The special turnable protective tube sleeve for medical equipment according to claim 2, 3 or 4, wherein the inner side wall of the buckling block (5) and the inner side wall of the Guan Jieguan (4) are on the same arc surface, and the outer side wall of the buckling block (5) and the outer side wall of the joint tube (4) are on the same arc surface.

6. The special turnable protective tube sleeve for the medical instrument according to claim 1, 2, 3 or 4, wherein the inner diameter of the joint tube (4) is the same as the inner diameters of the first protective tube (1) and the second protective tube (2), and the outer diameter of the joint tube (4) is the same as the outer diameters of the first protective tube (1) and the second protective tube (2).