CN212996656U - Snare - Google Patents

Abstract

Translated fromChinese

本公开涉及一种圈套器，圈套器包括套筒、可滑动地插设于套筒的滑杆、以及与滑杆连接的拉线，套筒包括第一段和第二段，且第二段构造为弧形结构；在拉线处于第一位置时，拉线凸出于第二段远离第一段的一端且凸出部分形成为套设环；在拉线处于第二位置时，拉线的套设环收缩于套筒内；滑杆用于在套筒内滑动以拉动拉线在第一位置和第二位置间切换。在上述技术方案中，通过将套筒的第二段设置为弧形结构，在与弧形喉镜配合使用的过程中，该构造为弧形结构的第二段可以与弧形喉镜插入部具备图像采集单元且构造为弯曲状的端部相贴合，从而形成良好的使用配合关系，便于操作人员的操作。

The present disclosure relates to a snare. The snare includes a sleeve, a sliding rod slidably inserted in the sleeve, and a pulling wire connected with the sliding rod. The sleeve includes a first section and a second section, and the second section is configured It is an arc structure; when the pull wire is in the first position, the pull wire protrudes from the end of the second segment away from the first segment and the protruding part forms a sleeve ring; when the pull wire is in the second position, the sleeve ring of the pull wire shrinks in the sleeve; the sliding rod is used for sliding in the sleeve to pull the pulling wire to switch between the first position and the second position. In the above technical solution, by setting the second section of the sleeve into an arc-shaped structure, in the process of cooperating with the arc-shaped laryngoscope, the second section of the arc-shaped structure can be combined with the arc-shaped laryngoscope insertion part The image acquisition unit is provided and the curved ends are configured to fit together, so as to form a good use and cooperation relationship and facilitate the operation of the operator.

Description

Snare

Technical Field

The disclosure relates to the technical field of medical instruments, in particular to a snare which can be used for throat surgery.

Background

Throat diseases account for over 1/3 of otolaryngological diseases, and a considerable portion of throat diseases require surgical treatment. Traditional laryngoscope surgery is the most common surgical procedure for treating throat lesions. However, in actual clinical work, some patients with difficult airways such as small mandible, high larynx position, thick neck and the like can be always encountered, and the operation completion of the laryngoscope is affected because the laryngoscope cannot fully expose the lesion due to the hard tubular characteristic. In the past, doctors mostly adopt throat split or fiber laryngoscope operation to remedy the situation, but the doctor can cause great trauma or high uncertainty of curative effect on the patient. In order to solve the problem, the arc laryngoscope operation technology is carried out at the same time. The design of the arc laryngoscope is more in line with the physiological radian of the human mouth-pharynx-laryngeal cavity, and can better expose the glottis and lighten the side damage of the tongue, the incisors and the oropharynx mucosa with the help of an auxiliary video system. Compared with a support laryngoscope, the arc laryngoscope operation has higher dependence on instruments and equipment, and the excellent instruments and equipment are the guarantee of the success of the operation. However, at present, no surgical instrument matched with the arc laryngoscope operation exists at home and abroad.

The snare is a surgical instrument commonly used for cutting pathological changes in throat surgery, and the conventional straight tube support laryngoscope has quite different shapes and curvatures, so that the conventional straight handle type snare cannot be used for surgery in an arc-shaped operation channel provided by the arc laryngoscope, and therefore, the snare matched with the arc laryngoscope in surgery needs to be designed.

SUMMERY OF THE UTILITY MODEL

The snare is capable of forming a good use fit relationship with an arc laryngoscope and is high in operability.

In order to achieve the above object, the present disclosure provides a snare comprising a sleeve, a slide bar slidably inserted into the sleeve, and a pull wire connected to the slide bar, wherein the sleeve comprises a first segment and a second segment, and the second segment is configured in an arc-shaped structure; when the pull wire is located at the first position, the pull wire protrudes out of one end of the second section, which is far away from the first section, and the protruding part is formed into a sleeving ring; when the pull wire is at the second position, the sleeving ring of the pull wire is contracted in the sleeve; the sliding rod is used for sliding in the sleeve to pull the pull wire to switch between the first position and the second position.

Optionally, the sliding rod is slidably disposed on the first section, two ends of the second section are respectively provided with a plugging cover, and a through hole for the stay wire to pass through is formed in each of the two plugging covers.

Optionally, each blocking cover comprises two through holes arranged at intervals, and two ends of the pull wire penetrate through the two through holes on the blocking cover far away from the first section respectively and penetrate out of the two through holes on the blocking cover near the first section respectively to be connected with the sliding rod.

Optionally, the sliding rod is provided with a mounting portion for connecting the pull wire.

Optionally, the mounting portion is disposed at the first end of the sliding rod and configured as a through mounting hole, the first opening of the mounting hole is located on the end face of the first end of the sliding rod, and the second opening of the mounting hole is located on the side wall of the sliding rod.

Optionally, in the direction of keeping away from the second section gradually, the first section includes along its axial extension first cell body, the drum that both ends are open and second cell body in proper order, the drum is used for the intercommunication first cell body with the second cell body.

Optionally, a stop plate is arranged at one end, away from the second section, of the second groove body to limit the sliding rod from being separated from the sleeve.

Optionally, the first and second slots have the same axial extension along the sleeve.

Optionally, one end of the first segment, which is far away from the second segment, is provided with a first operating portion, and the second end of the sliding rod is provided with a second operating portion used in cooperation with the first operating portion.

Optionally, the first operating portion is configured as a first pull ring, the second operating portion is configured as two second pull rings disposed at two sides of the slide bar in a radial direction, and the first pull ring and the second pull ring are arranged in parallel along an axial direction of the sleeve.

In above-mentioned technical scheme, set up to the arc structure through the second section with the sleeve, with the in-process that the cooperation of arc laryngoscope was used, this structure can be laminated for the tip that the second section of arc structure possesses the image acquisition unit and the structure is curved with arc laryngoscope insertion portion mutually to form good use cooperation relation, the operating personnel's of being convenient for operation.

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 structural view of a sleeve of a snare of an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of the slide bar of one embodiment of the snare of the present disclosure;

FIG. 3 is a schematic structural view of a snare according to an embodiment of the present disclosure, with a pull wire in a first position;

FIG. 4 is a schematic structural view of a snare according to an embodiment of the present disclosure, with the pull wire in a second position.

Description of the reference numerals

1 first section of thesleeve 11

111first tank 112 cylinder

113third groove 1131 stop plate

1132 first operatingpart 12 second segment

121-sealing 1211 through hole

2 end face ofslide bar 21

22side wall 23 second operating part

3Pull wire 31 cover ring

4mounting hole 41 first opening

42 second opening

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, unless otherwise specified, terms of orientation such as "inner and outer" are used to refer to the inner and outer of the specific structural outline, and terms such as "first and second" are used merely to distinguish one element from another, and are not sequential or important.

As shown in fig. 1 to 4, the present disclosure provides a snare comprising asleeve 1, aslide bar 2 slidably inserted in thesleeve 1, and a pull wire 3 connected to theslide bar 2, thesleeve 1 comprising afirst segment 11 and asecond segment 12, and thesecond segment 12 being configured in an arc-shaped structure; when the pull wire 3 is at the first position, the pull wire 3 protrudes from one end of thesecond section 12 far away from thefirst section 11, and the protruding part is formed into asleeving ring 31; when the pull wire 3 is at the second position, thesleeve ring 31 of the pull wire 3 is contracted in thesleeve 1; theslide bar 2 is used for sliding in thesleeve 1 to pull the pull wire 3 to switch between a first position and a second position.

In the above technical scheme, set up to the arc structure through the second section of 12 withsleeve 1, with the in-process that the cooperation of arc laryngoscope was used, this structure is that the second section of 12 of arc structure can possess the image acquisition unit and construct the tip laminating mutually for crooked form with arc laryngoscope insertion portion to form good use cooperation relation, the operating personnel's of being convenient for operation.

In one embodiment, as shown in fig. 1 and 3, thesliding rod 2 is slidably disposed on thefirst section 11, the two ends of thesecond section 12 are respectively disposed with ablocking cover 121, and a throughhole 1211 for passing the pull wire 3 is formed on each of the twoblocking covers 121. The slidingrod 2 is slidably arranged in thefirst section 11, that is, thesliding rod 2 does not slide in thesecond section 12, so that the axial movement distance of thesliding rod 2 in thesleeve 1 is shortened to a certain extent, the stroke of thesliding rod 2 is shortened, and the convenience of operation of an operator is improved; in addition, the two ends of thesecond section 12 are provided with theblocking covers 121, so that thesecond section 12 can be effectively prevented from being blocked by external impurities entering thesecond section 12, theblocking covers 121 are provided with throughholes 1211 for the pull wire 3 to pass through, the diameter of the throughholes 1211 is slightly larger than that of the pull wire 3, a good guiding effect can be achieved on the pull wire 3, and the situation of shaking in the pulling process is avoided.

In order to be able to better guide the movement of the wire 3, thesecond section 12 can also be of solid construction, through-going through-holes 1211 being provided in the axial direction of thesecond section 12 of solid construction for guiding the movement of the wire 3.

In one embodiment, one end of the pull wire is provided with the above-mentionedsleeve ring 31, the other end is connected with thesliding rod 2, each of the above-mentionedblocking covers 121 is provided with 1 throughhole 1211 for the pull wire 3 to pass through, and the slidingrod 2 slides in thefirst section 11 to drive the pull wire 3 to switch between the first position and the second position. In this case, after thesleeved ring 31 is contracted in thesleeve 1 through the through hole 1211 (the first position is switched to the second position), it is generally difficult to further drive the pull wire 3 by sliding theslide rod 2 to make thesleeved ring 31 protrude (the second position is switched to the first position), so the snare in this case is generally applied to a disposable snare.

In another embodiment, each of theblocking covers 121 includes two throughholes 1211 disposed at intervals, and two ends of the pulling wire 3 respectively penetrate through the two throughholes 1211 of theblocking cover 121 far away from thefirst segment 11 and respectively penetrate through the two throughholes 1211 of theblocking cover 121 near thefirst segment 11 to connect with thesliding rod 2. In this embodiment, thesleeving ring 2 is not a closed ring structure, and thenon-closed sleeving ring 2 gradually shrinks and becomes smaller in the process of switching the pull wire 3 from the first position to the second position, and when thesleeving ring 2 shrinks to the minimum (i.e. the pull wire is in the second position), the pull wire 3 will abut against a partition plate between two throughholes 1211 spaced from each other, so as to limit the pull wire 3 from continuing to shrink into thesleeve 1, and the operator can not easily pull the pull wire 3 because the pull wire 3 is completely shrunk into the throughhole 1211 by sliding thesliding rod 2 to drive the pull wire 3 from the second position to the first position, and can also pull the pull wire 3 at the partition plate to switch from the second position to the first position, so that the operator cannot conveniently pull the pull wire 3, and the operability is strong.

On the basis of the solution that the two ends of thesecond segment 12 are respectively provided with theplugging caps 121 and theplugging caps 121 are provided with the throughholes 1211, further, theplugging caps 121 far away from thefirst segment 11 can also be arranged in thefirst segment 11, and the length of theplugging caps 121 from the opening of the ends is between 0.5cm and 0.8 cm. By designing the blockingcap 121 of the twoblocking caps 121 far from thefirst segment 11 as described above, the pull wire 3 can be completely placed in thesleeve 1 when the pull wire 3 is in the second position, so that the pathological tissue can be completely cut off more conveniently.

In one embodiment, theslide bar 2 is provided with a mounting portion for connecting the pull wire 3, so as to connect the pull wire 3 to theslide bar 2 through the mounting portion, and the mounting portion may be a component of the structure of theslide bar 2 or a component connected to theslide bar 2, which is not limited by the present disclosure; either fixedly attached to theslide bar 2 or removably mounted to theslide bar 2, as is also not limited by the present disclosure.

Specifically, in one embodiment, as shown in fig. 2, the mounting portion is provided at the first end of theslide rod 2 and is configured as a throughmounting hole 4, and it should be noted that the first end of theslide rod 2 is an end close to the above-mentionedsleeve ring 31, so that the length of the wire 3 can be shortened, and the cost can be saved. Thefirst opening 41 of themounting hole 4 is located on theend face 21 of the first end of theslide bar 2 and the second opening 42 of themounting hole 4 is located on theside wall 22 of theslide bar 2. In one embodiment, themounting hole 4 is configured as a single, one end of the wire 3 is inserted into thefirst opening 41 and is extended out of thesecond opening 42, and the end of the wire 3 can be fixed to thesidewall 22 of thesliding bar 2 by bonding. In another embodiment, the twomounting holes 4 may be configured, and the two ends of the pulling wire 3 respectively penetrate through thefirst openings 41 of the twomounting holes 4 and the twosecond openings 42, so that the operator can fix the two ends of the pulling wire 3 together or can be respectively adhered to theside wall 22 of thesliding rod 2, which is not limited in the present disclosure.

Of course, the present disclosure does not limit the specific structure of the mounting portion, for example, in other embodiments, the mounting portion may be configured as a groove structure extending circumferentially around the slidingrod 2, and the end portion of the pulling wire 3 is wound in the groove structure to also achieve the fixed connection of the pulling wire 3.

As shown in fig. 1 and 3, in a direction gradually away from thesecond section 12, thefirst section 11 sequentially includes afirst groove 111 extending along an axial direction thereof, acylinder 112 with two open ends, and asecond groove 113, thecylinder 112 is used for communicating thefirst groove 111 and thesecond groove 113, and theslide bar 2 is slidably inserted into a slide defined by thefirst groove 111, thecylinder 112, and thesecond groove 113. Thecylinder 112 may effectively limit the radial disengagement of theslide bar 2 from the slide. In an embodiment, the radial cross section of thefirst groove 111 and thesecond groove 113 may be configured as a semicircular ring, and on the premise that the slidingrod 2 can slide, thefirst groove 111 and thesecond groove 113 of this type can reduce the usage of materials as much as possible, thereby reducing the overall weight of thesleeve 1 and facilitating the hand-held operation of an operator.

Further, as shown in fig. 1, astop plate 1131 is disposed at an end of thesecond groove 113 away from thesecond section 12 to limit the slidingrod 2 from axially disengaging from thesleeve 1, so as to facilitate the operation of the operator.

Optionally, thefirst groove 111 and thesecond groove 113 may have the same axial extension length along thesleeve 1, and in this embodiment, thefirst section 11 is configured as a symmetrical structure, so that the appearance is more attractive and the visual experience is better.

In order to facilitate the operation of the operator, one end of thefirst segment 11 away from thesecond segment 12 is provided with afirst operation portion 1132, the second end of the slidingrod 2 is provided with asecond operation portion 23 for cooperating with thefirst operation portion 1132, and thefirst operation portion 1132 and thesecond operation portion 23 may be configured in any suitable structure and shape to facilitate the operation of the operator, which is not limited by the present disclosure.

In one embodiment, as shown in fig. 3 and 4, thefirst operating portion 1132 may be configured as a first tab, and thesecond operating portion 23 is configured as two second tabs disposed at both sides of theslide bar 2 in a radial direction, the first tab and the second tab being arranged in parallel in an axial direction of thesleeve 1. The specific using operation process is as follows: the operator can insert the thumb into the first pull ring, the index finger and the middle finger are respectively inserted into the two second pull rings, and the index finger and the middle finger bend towards the direction of the thumb to pull theslide bar 2 to slide so as to switch the pull wire 3 from the first position to the second position; when the pull wire is switched to the second position, theslide bar 2 abuts against thestop plate 1131; at this time, the slidingrod 2 can be driven to move away from thestop plate 1131 by moving the index finger and the middle finger away from the thumb, so as to drive the pull wire 3 to switch from the second position to the first position, but a precondition needs to be defined in the returning process of switching the pull wire 3 from the second position to the first position: the stay wire 3 is made of a rigid material such as a steel wire, a copper wire, or the like; if the pull wire 3 is made of a flexible material, the switch from the second position to the first position cannot be achieved by the pull wire 3.

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 (10)

1. A snare is characterized by comprising a sleeve (1), a slide bar (2) slidably inserted in the sleeve (1), and a pull wire (3) connected with the slide bar (2),

the sleeve (1) comprises a first section (11) and a second section (12), and the second section (12) is configured into an arc-shaped structure;

when the pull wire (3) is at the first position, the pull wire (3) protrudes out of one end of the second section (12) far away from the first section (11), and the protruding part is formed into a sleeving ring (31); when the pull wire (3) is at the second position, the sheathing ring (31) of the pull wire (3) is contracted in the sleeve (1);

the sliding rod (2) is used for sliding in the sleeve (1) to pull the pull wire (3) to switch between the first position and the second position.

2. A snare according to claim 1, wherein the slide bar (2) is slidably disposed on the first section (11), and the second section (12) is provided at both ends with blocking caps (121), respectively, and both the blocking caps (121) are formed with through holes (1211) through which the pull wire (3) passes.

3. A snare according to claim 2, wherein each of the blocking caps (121) includes two through holes (1211) spaced apart from each other, and both ends of the pulling wire (3) respectively penetrate through the two through holes (1211) of the blocking cap (121) away from the first segment (11) and respectively penetrate through the two through holes (1211) of the blocking cap (121) close to the first segment (11) to connect with the slide bar (2).

4. A snare according to any one of claims 1 to 3, wherein a mount for connecting the pull wire (3) is provided on the slide bar (2).

5. A snare according to claim 4, wherein the mounting portion is provided at a first end of the slide bar (2) and is configured as a through-going mounting hole (4), a first opening (41) of the mounting hole (4) being located on an end face (21) of the first end of the slide bar (2), a second opening (42) of the mounting hole (4) being located on a side wall (22) of the slide bar (2).

6. A snare according to any one of claims 1 to 3, wherein the first section (11) includes, in order in a direction gradually away from the second section (12), a first channel (111) extending axially therealong, a cylinder (112) with open ends, and a second channel (113), the cylinder (112) being adapted to communicate the first channel (111) and the second channel (113).

7. A snare according to claim 6, wherein an end of the second channel (113) distal to the second segment (12) is provided with a stop plate (1131) to limit the disengagement of the slide bar (2) from within the sleeve (1).

8. A snare according to claim 6, wherein the first and second channels (111, 113) have the same axial extent along the sleeve (1).

9. A snare according to any one of claims 1 to 3, wherein an end of the first segment (11) remote from the second segment (12) is provided with a first handling portion (1132), and a second end of the slide bar (2) is provided with a second handling portion (23) for cooperating with the first handling portion (1132).

10. A snare according to claim 9, wherein the first manipulation portion (1132) is configured as a first loop, and the second manipulation portion (23) is configured as two second loops provided on both radial sides of the slide bar (2), the first and second loops being arranged in parallel in the axial direction of the sleeve (1).

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