Puncture rotary cutting needle for thyroid nodule treatment

Abstract

The utility model discloses a puncture rotary cutting needle for thyroid nodule treatment, which is characterized in that an outer tube and an inner tube are sleeved on the puncture rotary cutting needle, the inner tube is rotatably connected in the outer tube, and an outer side rotary cutting opening and an inner side rotary cutting opening are respectively arranged on the outer tube and the inner tube and are matched to form a rotary cutting window communicated with an inner cavity of the inner tube; the far end of the outer tube is constructed to be provided with the puncture tip, so that a puncture function is further realized on the basis of realizing rotary cutting and suction, thyroid tissues can be punctured and rotary-cut at the same time in a puncture entering process, the condition that the thyroid tissues need to enter and exit for multiple times is avoided, and the problem that an existing rotary cutting planer tool is difficult to adapt to a thyroid surgery scene is solved. According to the embodiment, the far end of the outer side rotary cutting opening extends to a part of the puncture tip, so that the opening position of the rotary cutting window at the far end is relatively lower than the opening position of the rotary cutting window at the near end, and when the thyroid tissue is sucked under negative pressure, the adsorption force to the thyroid tissue at the far end can be larger; and therefore, a better inhalation effect can be obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a puncture and cutting needle for treating thyroid nodules. Background Art

[0002] In medicine, various surgical tools are needed for human surgery, and endoscopic surgical tools are often devices with relatively high precision. For example, the main structure of a resection planer includes an outer knife and an inner knife arranged inside the outer knife. The inner knife is rotatable, and an incision is provided at the end of the outer knife. A blade is provided at the end of the inner knife, and the blade head is exposed at the incision. When the target tissue needs to be removed, the incision is brought close to the target tissue, and the blade head removes the tissue when the inner knife rotates. The removed tissue is sucked out by some suction equipment with greater suction force to complete the tissue removal.

[0003] In actual operations, due to the limitations of the planer structure, the planer needs to enter and exit the tissue multiple times to perform cutting and suction. However, when using a planer for thyroid-related surgery, this multiple entry and exit method cannot be used, as it will cause irreparable damage to the thyroid gland. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a puncture and rotary cutting needle suitable for the treatment of thyroid nodules, so as to solve the problem that the existing rotary cutting planer is difficult to adapt to the thyroid surgery scene.

[0005] To solve the above problems, the technical solution of the utility model is:

[0006] The utility model discloses a puncture and rotary cutting needle for treating thyroid nodules, and the needle body device comprises:

[0007] An outer tube, wherein the distal end of the outer tube has a puncture tip, and the outer tube body is provided with an outer rotary cut communicating with the inner cavity thereof, and the distal end of the outer rotary cut extends to part of the puncture tip;

[0008] The inner tube is configured to be driven by an external driving device to coaxially rotate and be connected to the inner cavity of the outer tube, and the proximal end of the inner tube is connected to the external negative pressure device, and the inner cavity of the inner tube is a negative pressure cavity; the tube body of the inner tube is provided with an inner rotary cut corresponding to the outer rotary cut, the inner rotary cut and the outer rotary cut cooperate to form a rotary cut window connected to the negative pressure cavity, and the outer rotary cut and the inner rotary cut are respectively provided with an outer rotary cut surface and an inner rotary cut surface corresponding to the rotation direction;

[0009] Among them, the distal end and proximal end of the inner rotary cut are respectively provided with an inner distal guide bevel and an inner proximal guide bevel facing the axis, and the distal end and proximal end of the outer rotary cut are respectively provided with an outer distal guide bevel and an outer proximal guide bevel facing the axis, and the inner distal guide bevel matches the outer distal guide bevel, and the inner proximal guide bevel matches the outer proximal guide bevel.

[0010] The puncture and cutting needle for treating thyroid nodules of the utility model also includes a flushing pipeline;

[0011] A receiving groove connected to the outer rotary cut is axially provided on the tube body of the outer tube, the flushing pipeline is at least partially arranged in the receiving groove, and the output end of the flushing pipeline is arranged toward the outer rotary cut.

[0012] The utility model discloses a puncture and cutting needle for treating thyroid nodules, wherein the outer cutting surface comprises a first outer cutting surface and a second outer cutting surface respectively opened on both sides of the outer cutting opening in the axial direction; the first outer cutting surface and the second outer cutting surface are respectively provided with a plurality of first outer cutting teeth and a second outer cutting teeth arranged in the axial direction.

[0013] According to the utility model, the puncture and rotary cutting needle for treating thyroid nodules has the surfaces of the first outer cutting tooth and the second outer cutting tooth located at the distal end facing the puncture tip as puncture transition surfaces, and the inclination of the puncture transition surface relative to the axis is less than or equal to the inclination of the conical surface of the puncture tip relative to the axis.

[0014] The utility model discloses a puncture and cutting needle for treating thyroid nodules, wherein the inner cutting surface comprises a first inner cutting surface and a second inner cutting surface respectively opened on both sides of the inner cutting opening in the axial direction; the first inner cutting surface and the second inner cutting surface are respectively provided with a plurality of first inner cutting teeth and a second inner cutting teeth arranged in the axial direction.

[0015] The utility model discloses a puncture and cutting needle for treating thyroid nodules, wherein the taper of the puncture tip is 25° to 30°.

[0016] The utility model discloses a puncture and cutting needle for treating thyroid nodules, wherein the distal end of the inner tube is configured as an inner tip adapted to the inner cavity of the puncture tip.

[0017] The utility model provides a puncture and cutting needle for treating thyroid nodules, wherein the outer distal guiding bevel and the inner distal guiding bevel are coplanar, and the angles between the outer distal guiding bevel and the inner distal guiding bevel and the axis are 25° to 30°.

[0018] The utility model provides a puncture and cutting needle for treating thyroid nodules, wherein the outer proximal guiding bevel and the inner proximal guiding bevel are coplanar, and the angles between the outer proximal guiding bevel and the inner proximal guiding bevel and the axis are 25° to 30°.

[0019] The utility model of the puncture and rotary cutting needle for treating thyroid nodules has a plurality of matching inner distal bevel cutting teeth and outer distal bevel cutting teeth arranged on the inner distal guide bevel and the outer distal guide bevel respectively;

[0020] The inner proximal guide slope and the outer proximal guide slope are respectively provided with a plurality of matching inner proximal slope cutting teeth and outer proximal slope cutting teeth.

[0021] Due to the adoption of the above technical solution, the utility model has the following advantages and positive effects compared with the prior art:

[0022] 1. An embodiment of the utility model sets a sleeved outer tube and an inner tube, sets the inner tube as a rotatable device connected to the outer tube, and respectively sets an outer rotary cut and an inner rotary cut on the outer tube and the inner tube, which cooperate to form a rotary cutting window connected to the inner cavity of the inner tube; and the distal end of the outer tube is constructed to have a puncture tip, which can further realize the puncture function on the basis of realizing rotary cutting and suction, and then the thyroid tissue can be rotary cut while puncturing during the puncture process, avoiding the need for multiple in and out, and solving the problem that the existing rotary cutting planer is difficult to adapt to the thyroid surgery scene. In addition, in this embodiment, the distal end of the outer rotary cut is set to extend to part of the puncture tip, so that the opening position of the rotary cutting window at the distal end is relatively lower than its opening position at the proximal end. When the thyroid tissue is sucked in by negative pressure, the adsorption force on the distal thyroid tissue can be greater, thereby obtaining a better suction effect.

[0023] 2. In one embodiment of the utility model, an outer distal guide bevel and an outer proximal guide bevel are arranged at the distal end and the proximal end of the outer rotational incision, and an inner distal guide bevel and an inner proximal guide bevel facing the axis are arranged at the distal end and the proximal end of the inner rotational incision, and the outer distal guide bevel and the inner distal guide bevel are arranged to match and be coplanar, and the outer proximal guide bevel and the inner proximal guide bevel are arranged to match and be coplanar, so that when the thyroid tissue is inhaled, a certain suction guiding effect can be achieved on the thyroid tissue, so that the thyroid tissue can be inhaled more completely. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the inner tube and the outer tube of the puncture and cutting needle for treating thyroid nodules of the utility model;

[0025] Figure 2It is an overall schematic diagram of the puncture and cutting needle for treating thyroid nodules of the utility model;

[0026] Figure 3 It is a schematic diagram of the flushing pipeline of the puncture and cutting needle for treating thyroid nodules of the utility model.

[0027] Explanation of the reference numerals: 1. outer tube; 101. first outer cutting tooth; 102. second outer cutting tooth; 103. outer distal guiding bevel; 104. outer proximal guiding bevel; 105. accommodating groove; 2. inner tube; 201. first inner cutting tooth; 202. second inner cutting tooth; 203. inner distal guiding bevel; 204. inner proximal guiding bevel; 3. puncture tip; 4. flushing pipeline. DETAILED DESCRIPTION

[0028] The following is a further detailed description of a puncture and rotary cutting needle for treating thyroid nodules proposed by the utility model in combination with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become clearer according to the following description and claims.

[0029] See also Figures 1 to 3 In one embodiment, a puncture and cutting needle for treating thyroid nodules includes an outer tube 1 and an inner tube 2. The distal end of the outer tube 1 is configured to have a puncture tip 3, and the outer tube 1 is provided with an outer cutting opening connected to its inner cavity, and the distal end of the outer cutting opening extends to part of the puncture tip 3 (wherein the proximal end is the end close to the operator and the distal end is the end away from the operator). The inner tube 2 is configured to be driven by an external driving device to rotate coaxially and connected to the inner cavity of the outer tube 1, and the proximal end of the inner tube 2 is connected to an external negative pressure device, so that the inner cavity of the inner tube 2 is a negative pressure cavity. An inner rotary cut corresponding to the outer rotary cut is provided on the tube body of the inner tube 2. The inner rotary cut and the outer rotary cut cooperate to form a rotary cutting window connected to the negative pressure chamber, and the outer rotary cut and the inner rotary cut are respectively provided with an outer rotary cutting surface and an inner rotary cutting surface corresponding to the rotation direction. The outer rotary cutting surface and the inner rotary cutting surface on the opposite side cooperate to achieve rotary cutting and resection of the thyroid tissue sucked into the rotary cutting window.

[0030] Among them, the distal end and proximal end of the inner rotary cut are respectively provided with an inner distal guiding bevel 203 and an inner proximal guiding bevel 204 facing the axis, and the distal end and proximal end of the outer rotary cut are respectively provided with an outer distal guiding bevel 103 and an outer proximal guiding bevel 104 facing the axis, and the inner distal guiding bevel 203 matches the outer distal guiding bevel 103, and the inner proximal guiding bevel 204 matches the outer proximal guiding bevel 104.

[0031] In this embodiment, the outer tube 1 and the inner tube 2 are provided, and the inner tube 2 is provided as a rotatable device and connected to the outer tube 1. The outer tube 1 and the inner tube 2 are respectively provided with an outer rotary cut and an inner rotary cut to cooperate to form a rotary cutting window connected to the inner cavity of the inner tube 2. The distal end of the outer tube 1 is constructed to have a puncture tip 3, which can further realize the puncture function on the basis of realizing rotary cutting and suction, and then the thyroid tissue can be rotary cut while puncturing during the puncture process, avoiding the situation of needing to enter and exit multiple times, and solving the problem that the existing rotary cutting planer is difficult to adapt to the thyroid surgery scene. In addition, in this embodiment, the distal end of the outer rotary cut is set to extend to part of the puncture tip 3, so that the opening position of the rotary cutting window at the distal end is relatively lower than its opening position at the proximal end. When the thyroid tissue is sucked in by negative pressure, the adsorption force on the distal thyroid tissue can be greater, thereby obtaining a better suction effect.

[0032] In addition, the present embodiment further arranges an outer distal guide bevel 103 and an outer proximal guide bevel 104 at the distal end and the proximal end of the outer rotational incision, and arranges an inner distal guide bevel 203 and an inner proximal guide bevel 204 facing the axis at the distal end and the proximal end of the inner rotational incision, and the outer distal guide bevel 103 and the inner distal guide bevel 203 are arranged to match and be coplanar, and the outer proximal guide bevel 104 and the inner proximal guide bevel 204 are arranged to match and be coplanar, so that when the thyroid tissue is inhaled, a certain suction guiding effect can be achieved on the thyroid tissue, so that the thyroid tissue can be inhaled more completely.

[0033] The specific structure of the puncture and cutting needle for treating thyroid nodules in this embodiment is further described below:

[0034] In this embodiment, the puncture and rotary cutting needle may further include a flushing pipeline 4 for flushing the rotary cutting position, thereby making the rotary cutting process smoother.

[0035] The specific arrangement of the flushing pipeline 4 may be as follows: a receiving groove 105 connected to the outer rotary cut is axially opened on the tube body of the outer tube 1, the flushing pipeline 4 is at least partially arranged in the receiving groove 105, and the output end of the flushing pipeline 4 is arranged toward the outer rotary cut (a long rectangular installation groove is opened from the proximal end to the distal end of the outer tube 1, and the distal end of the rectangular installation groove extends to the above-mentioned outer distal guide inclined surface 103, and the tube body of the flushing pipeline 4 can be set to be embedded in the rectangular installation groove, and the liquid outlet at the distal end of the flushing pipeline 4 can be set to be coplanar with the outer distal guide inclined surface 103, that is, the liquid outlet is also set to be an inclined surface). Of course, in other embodiments, the flushing pipeline 4 can also be directly integrally formed on the outer tube 1.

[0036] In this embodiment, the above-mentioned outer rotary cut surface is a first outer rotary cut surface and a second outer rotary cut surface respectively opened on both sides of the axial direction of the outer rotary cut, and the first outer rotary cut surface and the second outer rotary cut surface may be respectively provided with a plurality of first outer cutting teeth 101 and second outer cutting teeth 102 arranged along the axial direction (the shape of the outer rotary cut may specifically be a rectangle, that is, the first outer cutting teeth 101 and the second outer cutting teeth 102 are respectively arranged along the axial direction of the rectangle on two side lines parallel to the axis).

[0037] Furthermore, the surfaces of the first outer cutting tooth 101 and the second outer cutting tooth 102 located at the distal end (i.e., the two cutting teeth at the farthest ends on both sides of the outer tube 1) facing the puncture tip 3 are both puncture transition surfaces (i.e., the side surface closest to the puncture tip 3), and the inclination of the puncture transition surface relative to the axis is arranged to be less than or equal to the inclination of the conical surface of the puncture tip 3 relative to the axis, that is, the acute angle formed by the puncture transition surface and the axis is smaller than the angle between the conical surface of the puncture tip 3 and the axis. The purpose of this arrangement is to prevent the tip of the outer cutting tooth from becoming a barb-like shape during the puncture process, so that the insertion process is smoother and the damage to the thyroid tissue is less.

[0038] Of course, in other embodiments, the first external cutting surface and the second external cutting surface may also be configured as flat edges, which is not specifically limited here.

[0039] In this embodiment, the inner rotary cut surface is a first inner rotary cut surface and a second inner rotary cut surface respectively opened on both sides of the inner rotary cut in the axial direction. The first inner rotary cut surface and the second inner rotary cut surface are respectively provided with a plurality of first inner cutting teeth 201 and second inner cutting teeth 202 arranged along the axial direction, that is, the arrangement form is similar to that of the outer tube 1, the inner rotary cut is also rectangular, and the first inner cutting teeth 201 and the second inner cutting teeth 202 are respectively arranged along the axial direction of the rectangle on two side lines parallel to the axis.

[0040] Of course, in other embodiments, the first inner rotational cutting surface and the second inner rotational cutting surface may also be configured as flat edges, which is not specifically limited here.

[0041] In this embodiment, in order to ensure the stability of the puncture process, the taper of the puncture tip 3 is 25° to 30°. If the taper is too large, the sharpness will be insufficient, while if the taper is too small, the sawtooth length will be too long, which cannot be adapted to the puncture and excision of small masses.

[0042] In this embodiment, in order to ensure the smoothness of the rotational connection and the stability of the distal rotation, the distal end of the inner tube 2 can also be constructed as an internal tip adapted to the inner cavity of the puncture tip 3, that is, the conical outer surface of the internal tip at the distal end of the inner tube 2 matches the conical inner surface of the puncture tip 3 at the distal end of the outer tube 1.

[0043] In this embodiment, the outer distal guiding slope 103 and the inner distal guiding slope 203 are coplanar, and the angles between the outer distal guiding slope 103 and the inner distal guiding slope 203 and the axis are 25° to 30°.

[0044] In this embodiment, the outer proximal guiding slope 104 and the inner proximal guiding slope 204 are coplanar, and the angle between the outer proximal guiding slope 104 and the inner proximal guiding slope 204 and the axis is 25° to 30°.

[0045] In this embodiment, a plurality of matching inner distal bevel cutting teeth and outer distal bevel cutting teeth are arranged on the inner distal guide bevel 203 and the outer distal bevel cutting teeth 103, respectively, and a plurality of matching inner proximal bevel cutting teeth and outer proximal bevel cutting teeth are arranged on the inner proximal guide bevel 204 and the outer proximal guide bevel 104, respectively, that is, cutting teeth are arranged on both the inner rotary cut and the outer rotary cut surrounding the entire rotary cutting window, thereby making the cutting of the thyroid tissue more complete, avoiding the situation in which the thyroid tissue is not cut at the position where the cutting teeth are not arranged and is pulled, causing damage to the surrounding thyroid tissue.

[0046] Application Examples

[0047] This embodiment, based on the above-mentioned embodiment 1, describes the specific application process of the puncture and cutting needle for the treatment of thyroid nodules:

[0048] The patient lies flat with his head tilted back and hyperextended. After local or general anesthesia is satisfactory, an isolation fluid is injected around the thyroid gland. A small incision of 3-5 mm long is made with a blade on the skin at the needle insertion site. The puncture and excision needle for the treatment of thyroid nodules is inserted from here, with the needle tip pointing to the center of the thyroid nodule. When the needle is inserted, the cutting teeth of the inner cannula face the center of the tumor. When the groove is located in the center of the nodule, the device is started to excision, and the external negative suction device is turned on to attract. During the excision process, the flushing line 4 is connected to external saline for flushing. The flushing, excision and attraction are performed while flushing. After the treatment is achieved, the flushing is turned off, and the needle is withdrawn while attraction is performed. After the operation, the operation site is pressed for 5 minutes.

[0049] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if other changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A puncture and cutting needle for treating thyroid nodules, characterized in that: The needle device comprises: An outer tube, wherein the distal end of the outer tube has a puncture tip, and the outer tube body is provided with an outer rotary cut communicating with the inner cavity thereof, and the distal end of the outer rotary cut extends to part of the puncture tip; The inner tube is configured to be driven by an external driving device to rotate coaxially and connected to the inner cavity of the outer tube, and the proximal end of the inner tube is connected to the external negative pressure device, and the inner cavity of the inner tube is a negative pressure cavity; the tube body of the inner tube is provided with an inner rotary cut corresponding to the outer rotary cut, the inner rotary cut and the outer rotary cut cooperate to form a rotary cut window connected to the negative pressure cavity, and the outer rotary cut and the inner rotary cut are respectively provided with an outer rotary cut surface and an inner rotary cut surface corresponding to the rotation direction; Among them, the distal end and proximal end of the inner rotary cut are respectively provided with an inner distal guide bevel and an inner proximal guide bevel facing the axis, and the distal end and proximal end of the outer rotary cut are respectively provided with an outer distal guide bevel and an outer proximal guide bevel facing the axis, and the inner distal guide bevel matches the outer distal guide bevel, and the inner proximal guide bevel matches the outer proximal guide bevel.

2. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: Also includes flushing lines; A receiving groove connected to the outer rotary cut is axially provided on the tube body of the outer tube, the flushing pipeline is at least partially arranged in the receiving groove, and the output end of the flushing pipeline is arranged toward the outer rotary cut.

3. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The outer rotary cut surface is a first outer rotary cut surface and a second outer rotary cut surface respectively opened on both sides of the outer rotary cut in the axial direction; the first outer rotary cut surface and the second outer rotary cut surface are respectively provided with a plurality of first outer cutting teeth and a second outer cutting teeth arranged in the axial direction.

4. The puncture and cutting needle for treating thyroid nodules according to claim 3, characterized in that: The surfaces of the first outer cutting tooth and the second outer cutting tooth at the distal end facing the puncture tip are both puncture transition surfaces, and the inclination of the puncture transition surface relative to the axis is less than or equal to the inclination of the conical surface of the puncture tip relative to the axis.

5. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The inner rotary cut surface is a first inner rotary cut surface and a second inner rotary cut surface respectively opened on both sides of the inner rotary cut in the axial direction; the first inner rotary cut surface and the second inner rotary cut surface are respectively provided with a plurality of first inner cutting teeth and a second inner cutting teeth arranged along the axial direction.

6. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The taper of the puncture tip is 25° to 30°.

7. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The distal end of the inner tube is configured to fit into the inner tip of the puncture tip lumen.

8. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The outer distal guide slope is coplanar with the inner distal guide slope, and the angles between the outer distal guide slope and the inner distal guide slope and the axis are 25° to 30°.

9. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The outer proximal guiding slope is coplanar with the inner proximal guiding slope, and the included angles between the outer proximal guiding slope and the inner proximal guiding slope and the axis are 25° to 30°.

10. The puncture and cutting needle for treating thyroid nodules according to claim 1, characterized in that: The inner distal guide slope and the outer distal guide slope are respectively provided with a plurality of matching inner distal slope cutting teeth and outer distal slope cutting teeth; The inner proximal guide slope and the outer proximal guide slope are respectively provided with a plurality of matching inner proximal slope cutting teeth and outer proximal slope cutting teeth.

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