CN215349303U

CN215349303U - Throat knife

Info

Publication number: CN215349303U
Application number: CN202120920940.8U
Authority: CN
Inventors: 李丽娟; 许挺; 王丽; 朱丽
Original assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Current assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-31
Anticipated expiration: 2031-04-29

Abstract

The present disclosure relates to a laryngeal knife, comprising: the cutter comprises a cutter bar, a cutter head, a locking part and a handle part; the cutter bar comprises a straight rod and an arc-shaped rod which are connected with each other, the arc-shaped rod is used for being placed in the throat cavity, one end, far away from the straight rod, of the arc-shaped rod is connected with the cutter head, and the cutter head is used for cutting throat tissues; the straight rod is movably connected with the handle part; the locking part is used for locking the straight rod to the handle part in an unlocking mode. The laryngeal knife can meet the requirement of performing an arc-shaped visual laryngoscope operation, can accurately and effectively cut throat tissues, and improves the success rate of the operation.

Description

Throat knife

Technical Field

The disclosure relates to the technical field of medical instruments, in particular to a laryngeal knife.

Background

Throat diseases account for more than one third of the diseases of the ear, nose and throat department, and a considerable part of throat diseases need to be treated by an operation. The laryngoscope has been widely used in clinical practice for the first time as the primary choice of the operation for vocal cord diseases because it can directly expose the glottis, understand the abnormality of the laryngeal structure in detail, and determine the location and range of the pathological changes.

However, in actual clinical work, some patients with difficult airways such as small mandible, high larynx position, thick neck and the like can be encountered, and the common laryngoscope cannot be exposed smoothly, so that the operation completion is influenced. In the past, doctors usually adopt throat split or fiber laryngoscope operation to remedy the situation, but the physical and psychological trauma of patients is caused by the treatment.

In order to solve the problem, the technology of the arc laryngoscope is carried forward, the design of the arc laryngoscope is more consistent with the physiological radian of the oral-pharyngeal cavity of a human body, and the glottis can be better exposed and the side damage of the oropharyngeal mucosa can be reduced with the help of an auxiliary imaging device. Compared with a support laryngoscope, the arc-shaped visual laryngoscope operation has higher dependence on instruments and equipment, and excellent instruments and equipment are successfully ensured by the operation.

At present, all use the laryngeal knife to design for supporting the laryngoscope operation clinically, be the linear type, can't satisfy the needs under the visual laryngoscope operation of arc, and then can't accurately cut the throat tissue effectively, reduce the success rate of operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a laryngeal knife which can meet the requirements of the proceeding of the arc-shaped visual laryngoscope operation, can accurately and effectively cut the throat tissues and improve the success rate of the operation.

In order to achieve the above object, the present disclosure provides a laryngeal knife, including: the cutter comprises a cutter bar, a cutter head, a locking part and a handle part; the knife bar comprises a straight bar and an arc bar which are connected with each other, the arc bar is used for being placed in a throat cavity, one end, far away from the straight bar, of the arc bar is connected with the knife head, and the knife head is used for cutting throat tissues; the straight rod is movably connected to the handle part; the locking part is used for locking the straight rod to the handle part in an unlocking mode.

Optionally, the tool bit includes connect in the first end of arc pole and keep away from the second end of arc pole, the tool bit is followed first end extremely the second end is convergent hook form, and the crooked direction of the tool bit that is constructed as hook form with the crooked direction of arc pole is unanimous.

Optionally, the cutting edge of the cutting head is provided at an inner edge thereof.

Optionally, the handle portion is formed with an adjusting hole, and the straight rod is rotatably and movably arranged in the adjusting hole along the axial direction of the straight rod; a communicating opening is formed in the inner side wall of the adjusting hole, a threaded hole is formed in the handle part, one end of the threaded hole is communicated with the communicating opening, and the other end of the threaded hole is open; the locking part is constructed as a threaded rod, and the end part of the threaded rod is used for penetrating through the threaded hole to abut against the side wall of the straight rod arranged in the adjusting hole.

Optionally, the adjusting hole is configured as a through hole having a length in an axial direction of 18mm to 30mm, and the straight rod has a length in an axial direction of 180mm to 240 mm.

Optionally, the threaded rod comprises a threaded rod body and a convex block which are connected with each other, one end of the threaded rod body is used for abutting against the side wall of the straight rod arranged in the adjusting hole, the other end of the threaded rod body is connected with the convex block, and the convex block is arranged outside the threaded hole.

Optionally, the threaded rod body comprises a first section and a second section which are connected with each other along the axial direction of the threaded rod body, the first section is connected with the lug, an external thread is formed on the outer surface of the first section, and the outer surface of the second section is configured into a smooth curved surface; the threaded hole comprises a first inner wall section and a second inner wall section from one open end to one end communicated with the communication port, wherein an internal thread matched with the external thread of the first section is formed on the first inner wall section, and the second inner wall section is a smooth curved surface.

Optionally, the included angle between the straight rod and the curved rod is between 110 degrees and 155 degrees.

Optionally, the handle portion includes a first handle portion and a second handle portion connected at an angle, the straight rod is movably connected to the first handle portion, and the locking portion is configured to unlockably lock the straight rod to the first handle portion.

Optionally, the first handle portion is configured as a block-like structure and the second handle portion is configured as a prismatic rod.

In the technical scheme, firstly, the cutter bar is arranged into the straight rod and the arc-shaped rod, and in the process of applying the laryngeal knife to throat surgery, because the arc-shaped rod is arc-shaped, an operator can conveniently place the arc-shaped rod in the throat cavity which is also arc-shaped, so that the requirement of the surgery under the arc-shaped visual laryngoscope is met; secondly, one end of the arc-shaped rod, which is far away from the straight rod, is connected with the cutter head, and the cutter head can accurately and effectively cut throat tissues, so that the success rate of the operation is improved; in addition, the straight rod is movably connected to the handle portion, and the locking portion is used for locking the straight rod to the handle portion in an unlocking mode. The operator can adjust the position of the straight rod relative to the handle part first, so that after the tool bit meets the requirements of the operating position and the operating direction, the straight rod is locked on the handle part by the aid of the locking part, the movement of the tool bar relative to the handle part in the operation process is avoided, and the operation stability of the laryngeal knife is guaranteed while the operation precision of the operation is improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic view of the structure of a laryngeal knife in accordance with an embodiment of the present disclosure;

FIG. 2 is a schematic view of the blade of the laryngeal knife, with a partially curved shaft, according to one embodiment of the present disclosure;

FIG. 3 is a schematic view of the structure of the locking portion of the laryngeal knife in accordance with an embodiment of the present disclosure;

figure 4 is a schematic view of the first handle portion of the laryngeal blade in accordance with one embodiment of the present disclosure.

Description of the reference numerals

1 knife bar 11 straight bar

12 arc-shaped rod 2 tool bit

21 first end of tool bit 22 second end of tool bit

23 inner edge 3 locking portion of cutting head

31 first section of threaded rod body 311

312 second 4 handle section

40 adjusting the first handle part of the hole 41

42 second handle portion

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, where the contrary is not stated, directional words such as "inner and outer" are used to refer to the inner and outer of the contours of a particular structure; the use of terms such as "first" and "second" is intended only to distinguish one element from another, and is not intended to be sequential or important.

As shown in fig. 1-4, the present disclosure provides a laryngeal knife, comprising: the cutter bar 1, the cutter head 2, the locking part 3 and the handle part 4; the knife bar 1 comprises a straight bar 11 and an arc bar 12 which are connected with each other, the arc bar 12 is used for being placed in the throat cavity, one end of the arc bar 12, which is far away from the straight bar 11, is connected with the knife head 2, and the knife head 2 is used for cutting throat tissues; the straight rod 11 is movably connected with the handle part 4; the locking portion 3 is used to lock the straight rod 11 to the handle portion 4 so as to be unlockable.

In the technical scheme, firstly, the knife bar 1 is arranged into the straight bar 11 and the arc-shaped bar 12, and in the process of applying the laryngeal knife to the throat surgery, because the arc-shaped bar 12 is in the arc shape, an operator can conveniently place the arc-shaped bar 12 in the throat cavity which is also in the arc shape, so that the requirement of the surgery under the arc-shaped visual laryngoscope is met; secondly, one end of the arc-shaped rod 12, which is far away from the straight rod 11, is connected with the cutter head 2, and the cutter head 2 can accurately and effectively cut throat tissues, so that the success rate of the operation is improved; in addition, the straight rod 11 is movably connected to the handle portion 4, and the locking portion 3 is used for locking the straight rod 11 to the handle portion 4 in an unlocking manner. The operator can adjust the position of straight-bar 11 for handle portion 4 earlier to make behind tool bit 2 satisfied operating position and operation direction's demand, reuse locking portion 3 with straight-bar 11 locking on handle portion 4, avoid cutter arbor 1 to move about for handle portion 4 in the operation process, improve the operation precision of operation when guaranteeing this larynx sword operating stability.

In one embodiment, referring to fig. 1 and 2, the cutter head 2 comprises a first end 21 connected to the arc-shaped rod 12 and a second end 22 far away from the arc-shaped rod 12, the cutter head 2 is in a tapered sickle shape from the first end 21 to the second end 22, and the bending direction of the cutter head 2 configured in the sickle shape is consistent with the bending direction of the arc-shaped rod 12.

In this embodiment, first, the cutter head 2 is in a shape of a reduced sickle from the first end 21 to the second end 22, that is, the cutter head 2 becomes gradually sharp from the first end 21 to the second end 22, so that the cutting operation of the cutter head 2 is facilitated, and the convenience of cutting is improved; secondly, the direction of curvature of the sickle-shaped blade head 2 coincides with the direction of curvature of the curved bar 12, facilitating the manufacturing process of the blade head 2.

Alternatively, as shown with reference to fig. 2, the cutting edge of the cutting head 2 is provided at its inner edge 23. When carrying out clinical cutting, because the throat operation is remote operation, the degree of depth that to control the cutting can not be too deep, and general cutting mode is from back to front or from the bottom up cuts, sets up the cutting edge at its inboard border 23 and more is convenient for operating personnel to control the dynamics of cutting.

Alternatively, the length of the curved rod 12 along its extension may be between 50mm and 90 mm.

Referring to fig. 1, 3 and 4, the handle portion 4 is formed with an adjustment hole 40, and the straight rod 11 is rotatably and movably disposed in the adjustment hole 40 along an axial direction thereof; a communication opening is formed in the inner side wall of the adjusting hole 40, a threaded hole is formed in the handle portion 4, one end of the threaded hole is communicated with the communication opening, and the other end of the threaded hole is open; the locking portion 3 is configured as a threaded rod, the end of which is adapted to pass through a threaded hole to abut against the side wall of the straight rod 11 disposed in the adjustment hole 40.

In this embodiment, firstly, the straight rod 11 is rotatably and movably arranged in the adjusting hole 40 along the axial direction thereof, an operator can adjust the operation direction of the cutter head 2 connected to the cutter bar 1 by rotating the straight rod 11, and can adjust the length of the actual working part of the cutter bar 1 by moving the straight rod 11 along the axial direction, so that throat tissues at different positions can be cut, and the practicability of the laryngeal knife is improved; secondly, be formed with the intercommunication mouth on the inside wall of regulation hole 40, still be formed with the screw hole with this intercommunication mouth intercommunication on the handle portion 4, locking portion 3 constructs for the threaded rod, and this screw hole is worn to establish by the tip of threaded rod in order to support with the lateral wall that sets up straight-bar 11 in regulation hole 40 to realize the locking to straight-bar 11 (also cutter arbor 1) position, guarantee the stability of cutter arbor 1 position. The locking part 3, which is configured as a threaded rod, is simple in construction and easy to operate. However, the present disclosure does not limit the specific structure type of the locking portion 3, and the straight rod 11 may be effectively locked.

Alternatively, as shown with reference to fig. 4, the adjustment hole 40 is configured as a through hole having a length in its axial direction of between 18mm and 30mm, and the straight rod 11 has a length in its axial direction of between 180mm and 240 mm.

In this embodiment, by providing the adjustment hole 40 as a through hole, the convenience of adjustment of the straight bar 11 can be improved; in addition, the length of the adjusting hole 40 and the length of the straight rod 11 are not limited in the present disclosure, and can be set according to the requirement.

Referring to fig. 3, the threaded rod includes a threaded rod body 31 and a projection 32 connected to each other, one end of the threaded rod body 31 is used for abutting against the side wall of the straight rod 11 disposed in the adjusting hole 40, the other end is connected to the projection 32, and the projection 32 is disposed outside the threaded hole.

Through setting up this lug 32, operating personnel can realize thereby the tip of threaded rod body 31 and the lateral wall of the straight-bar 11 that sets up in regulation hole 40 through rotating this lug 32 and support when operating, improve the convenience of operation. The bump 32 may be configured in any suitable shape and configuration, as the present disclosure is not limited thereto. In addition, the outer surface of the projection 32 may be provided with anti-slip threads to facilitate the turning operation by the operator.

In other embodiments, referring to fig. 1 and 3, the threaded rod body 31 includes a first section 311 and a second section 312 connected to each other along an axial direction thereof, the first section 311 is connected to the projection 32, an outer surface of the first section 311 is formed with an external thread, and an outer surface of the second section 312 is configured as a smoothly curved surface; the threaded hole includes a first inner wall section formed with an internal thread for engaging with the external thread of the first section 311 and a second inner wall section configured as a smooth curved surface from an open end to an end communicating with the communication port.

In this embodiment, the first section 311 of the threaded rod body 31 is provided with an external thread, and correspondingly, the first inner wall section of the threaded bore is provided with an internal thread which cooperates with the external thread of the first section 311; under the prerequisite of guaranteeing threaded rod body 31 and screw hole cooperation compactness, need not to all set up threaded rod body 31's the whole external surface to the external screw thread, need not to all set up the inner wall of screw hole to the internal thread, reduced manufacturing's cost to also can reduce this threaded rod body 31 and wear to establish the screw hole with set up the degree of difficulty that the lateral wall of the straight-bar 11 in adjustment hole 40 supports.

Alternatively, the length of the threaded rod body 31 is between 73mm and 93mm, and the length of the first section 311 is between 10mm and 20 mm; the dimension of the projection 32 in the extending direction of the threaded rod body 31 is between 7mm and 12mm, and the dimension of the projection 32 in the radial direction of the threaded rod body 31 is between 7mm and 10 mm.

Optionally, the cutting head 2 and the arc-shaped rod 12 are integrally formed, thereby facilitating the manufacturing. Of course, in other embodiments, the cutter head 2 can be detachably mounted on the arc-shaped rod 12, which is not limited by the disclosure.

Optionally, the angle between the straight rod 11 and the curved rod 12 is between 110 and 155 degrees to improve the ease of insertion of the curved rod 12 into the throat. However, the present disclosure does not limit the angle between the straight bar 11 and the curved bar 12.

Referring to fig. 1, the handle portion 4 includes a first handle portion 41 and a second handle portion 42 connected at an angle, the straight rod 11 is movably connected to the first handle portion 41, and the locking portion 3 is used for locking the straight rod 11 to the first handle portion 41 in an unlocking manner.

In this embodiment, the handle portion 4 is provided with the first handle portion 41 and the second handle portion 42 which are connected at an angle, so that the operator can hold the handle portion conveniently, and the stability of the operation is improved.

Alternatively, the first handle portion 41 is configured as a block-like structure and the second handle portion 42 is configured as a prismatic rod. The first handle part 41 is of a blocky structure, so that the straight rod 11 and the locking part 3 can be conveniently arranged; the second handle part 42 is a prism rod, so that the overall weight of the throat knife can be reduced while the throat knife is convenient to hold and prevent slipping by an operator, and the lightweight design of the throat knife is convenient.

In one embodiment, the first handle portion 41 is configured as a rectangular block-like structure with a long dimension of between 75mm and 95mm, a short dimension of between 18mm and 30mm, and a second handle portion 42 configured as a prism stem having a length of between 60mm and 85 mm.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A laryngeal knife, characterised in that the laryngeal knife comprises:

the cutter comprises a cutter bar (1), a cutter head (2), a locking part (3) and a handle part (4);

the knife bar (1) comprises a straight bar (11) and an arc-shaped bar (12) which are connected with each other, the arc-shaped bar (12) is used for being placed in a throat cavity, one end, far away from the straight bar (11), of the arc-shaped bar (12) is connected with the knife head (2), and the knife head (2) is used for cutting throat tissues; the straight rod (11) is movably connected to the handle part (4); the locking part (3) is used for locking the straight rod (11) to the handle part (4) in an unlocking manner.

2. The laryngeal knife according to claim 1, characterised in that the blade (2) comprises a first end (21) connected to the curved bar (12) and a second end (22) remote from the curved bar (12), the blade (2) being in the shape of a tapering sickle from the first end (21) to the second end (22), and the direction of curvature of the blade (2) configured as a sickle coinciding with the direction of curvature of the curved bar (12).

3. The laryngeal knife according to claim 2, characterised in that the cutting edge of the blade (2) is arranged at its inner edge (23).

4. A laryngeal knife according to any one of claims 1-3, characterised in that the handle portion (4) is formed with an adjustment hole (40), the straight rod (11) being rotatably and axially movably arranged in the adjustment hole (40);

a communicating opening is formed in the inner side wall of the adjusting hole (40), a threaded hole is formed in the handle part (4), one end of the threaded hole is communicated with the communicating opening, and the other end of the threaded hole is open;

the locking part (3) is constructed into a threaded rod, and the end part of the threaded rod is used for penetrating through the threaded hole to abut against the side wall of the straight rod (11) arranged in the adjusting hole (40).

5. The laryngeal knife according to claim 4, characterised in that the adjustment hole (40) is configured as a through-hole having a length in its axial direction of between 18mm and 30mm, the straight rod (11) having a length in its axial direction of between 180mm and 240 mm.

6. The laryngeal knife according to claim 4, characterised in that the threaded rod comprises a threaded rod body (31) and a projection (32) which are connected to each other, one end of the threaded rod body (31) is used for abutting against the side wall of the straight rod (11) arranged in the adjustment hole (40), the other end is connected with the projection (32), and the projection (32) is arranged outside the threaded hole.

7. The laryngeal knife according to claim 6, characterised in that the threaded shank body (31) comprises a first section (311) and a second section (312) connected to each other in its axial direction, and that the first section (311) is connected to the lug (32), and that the outer surface of the first section (311) is formed with an external thread and the outer surface of the second section (312) is configured as a rounded curved surface;

the threaded hole comprises a first inner wall section and a second inner wall section from one end which is open to one end which is communicated with the communication port, wherein an internal thread which is matched with the external thread of the first section (311) is formed on the first inner wall section, and the second inner wall section is constructed into a smooth curved surface.

8. A laryngeal knife according to any one of claims 1-3, characterised in that the angle between the straight rod (11) and the curved rod (12) is between 110 and 155 degrees.

9. A laryngeal knife according to any one of claims 1-3, characterised in that the handle portion (4) comprises a first handle portion (41) and a second handle portion (42) connected at an angle, that the straight bar (11) is movably connected to the first handle portion (41), and that the locking portion (3) is adapted to lock the straight bar (11) to the first handle portion (41) in an unlockable manner.

10. The laryngeal knife according to claim 9, characterised in that the first handle portion (41) is configured as a block-shaped structure and the second handle portion (42) is configured as a prism rod.