CN219516564U

CN219516564U - Positioning guide assembly, tumor cutting verification position guide device and radiotherapy positioning device

Info

Publication number: CN219516564U
Application number: CN202221350453.3U
Authority: CN
Inventors: 冯冬冬; 王佳峰; 蒋烈浩; 谭卓; 葛明华
Original assignee: Zhejiang Provincial Peoples Hospital
Current assignee: Zhejiang Provincial Peoples Hospital
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2023-08-15
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a positioning guide assembly, a tumor cutting verification position guide device and a radiotherapy positioning device, and belongs to the technical field of positioning guide. The existing puncture positioning method has potential safety hazards when being used for positioning organs with rich blood supply such as liver, lung and the like or organs close to important blood vessels by using a rigid positioning needle body. The utility model relates to a positioning guide assembly, which is provided with a wire body for positioning and marking, a needle body with a hollow cavity, and a rotating head for winding and pulling the wire body, wherein a bidirectional barb-shaped structure of an absorbable wire body is hidden in the hollow cavity of the needle body, after the tip of the needle body reaches a designated position, a wrench piece is buckled, the released barb end of the wire body slowly pulls the wire body through the rotating head, and the barb-shaped structure is unfolded and stably remained at the designated position in a machine body. Then the needle body is taken out, and the thread body is left, so that the accurate positioning before the operation cutting and inspection is realized; the scheme of the utility model is practical, feasible and ingenious in conception.

Description

Positioning guide assembly, tumor cutting verification position guide device and radiotherapy positioning device

Technical Field

The utility model relates to a positioning guide assembly, a tumor cutting verification position guide device and a radiotherapy positioning device, and belongs to the technical field of positioning guide.

Background

In clinical work, the surgical treatment of the needle body on the tumor can be firstly clear, the needle body can be resected in a targeted manner, and if the position of the tumor can be accurately known in two application scenes, the operation time can be greatly reduced, and the operation accuracy is improved:

first category: superficial tumor biopsies.

Superficial tumors can often be found by palpation or ultrasound examination, and in order to clarify their nature, biopsies usually need to be taken by means of local anesthesia. However, after local anesthetic enters the interstitial space, subcutaneous tissue presents a nodular touch, which interferes with the positioning of the target nodule by the surgeon, so that only tissues can be continuously separated, and suspected "nodules" can be continuously distinguished until the target nodule is found, which has the following disadvantages: (1) extending the procedure time (2) increases unnecessary tissue damage (3) which may damage the capsule of the tumor, and if malignant, may result in an increase in local recurrence and distant metastasis.

The second category: sections of the liver, lung, etc. are resected when a nodule is co-located inside a larger volume organ.

In the face of such patients, the surgeon is usually required to determine approximately the anatomical location and proximity of the tumor by means of ultrasound, CT, magnetic resonance, etc. before surgery, and then indirectly infer the region of the tumor by means of anatomical landmarks during surgery, and thus complete resection of the tumor is usually required at the level of the surgeon's anatomy, but is still inevitably provided with a certain degree of blindness.

Further, the Chinese patent (bulletin number: CN 207837618) discloses an operation positioning needle body, which comprises a positioning needle body and a puncture needle body sleeve, wherein the positioning needle body is arranged in the puncture needle body sleeve in a penetrating way and is close to the tip end of the puncture needle body sleeve, a nylon wire body is further arranged in the puncture needle body sleeve, one end of the nylon wire body is connected with the positioning needle body through a metal connecting pipe, the other end of the nylon wire body extends out of the puncture needle body sleeve, a push pipe is arranged on the nylon wire body in a penetrating way, one end of the push pipe is sleeved on the metal connecting pipe in a sliding way, a limiting step limiting the sliding range of the push pipe is arranged on the metal connecting pipe, and the other end of the push pipe extends out of the puncture needle body sleeve. When the puncture needle body sleeve penetrates through the skin of a patient, after the puncture needle body sleeve reaches a proper puncture position, the push tube is pushed, the positioning needle body is pushed out of the puncture needle body sleeve by the push tube through the metal connecting tube, and the three groups of inverted needle bodies are continuously pushed into the targeting position of breast tumor or pulmonary nodule of the patient, so that the positioning needle body can be reliably positioned by the three groups of inverted needle bodies with different lengths, and the situation of positioning failure is avoided. And then taking out the puncture needle body sleeve and the push tube, leaving the positioning needle body in the patient, and enabling one end of the nylon wire body to extend out of the patient, so that the positioning work is finished, and waiting for subsequent operation treatment.

The above scheme and the existing tumor puncture positioning method are used for positioning by placing a rigid positioning needle body in a target area under the assistance of an imaging technology, but in organs rich in blood such as liver, lung and the like, the positioning by using the rigid positioning needle body has potential safety hazards.

Further, the positioning needle body structure can move in the organ along with the movement of the organ, and the moving positioning needle body structure possibly collides with tumor envelopes, blood vessels, nerves and the like, so that uncontrollable risks of damaging adjacent tumor envelopes, blood vessels, nerves and the like can be brought.

Disclosure of Invention

The needle body is used for solving the defects of the prior art, and the utility model aims to provide a wire body for positioning and marking, a needle body with a hollow cavity and a rotating head for winding the wire body, wherein a thorn-shaped structure of the wire body is hidden in the hollow cavity of the needle body, so that the needle body can be conveniently penetrated into a designated position in a machine body along with the tip end part of the needle body, and the thorn-shaped structure positioned in the hollow cavity is pulled to the designated position of the machine body through the rotating head, so that the accurate positioning before operation cutting and inspection can be realized; the flexible barb structure is sent to the appointed position in the machine body through the rigid needle body, then the rigid needle body is pulled out, only the flexible absorbable line body is left, the risk of secondary damage caused by the movement of the positioning device can be avoided by utilizing the rigid-flexible combined structure, the inconvenience that the needle is required to be punctured again for taking out when the puncture is inaccurate or the operation plan is changed is avoided, and the scheme is practical, practical and feasible, and ingenious positioning and guiding are conceived.

The second purpose of the utility model is to provide a needle which can hide part of the thread body in the hollow cavity of the needle body, facilitate the thread body to be penetrated into the appointed position in the machine body along with the tip end of the needle body, and pull the thread body to pull the thread body positioned in the hollow cavity to the appointed position of the machine body; then the needle body is taken out, and the thread body is left, so that the accurate positioning before the operation cutting and inspection is realized; by utilizing the structure with hardness and softness, the risk of secondary damage caused by the migration of the positioning device can be avoided, the inconvenience that the positioning guide assembly is required to be punctured again and taken out when the puncture is inaccurate or the operation plan is changed is avoided, and the positioning guide assembly is practical, practical and feasible and ingenious in conception.

The utility model aims at providing a wire body for positioning and marking, a needle body with a hollow cavity, a rotary head for winding the wire body, a cutter body for cutting the wire body, and a spanner member assembled on the adjacent cutter body; after the needle body penetrates into the machine body, the wrench piece is pressed to cut off the wire body, the wire body hidden in the hollow cavity penetrates into a designated position in the machine body along with the tip end of the needle body, and then the hidden wire body positioned in the hollow cavity is pulled out through the rotating head, so that the free end of the wire body is anchored at the designated position of the machine body; and then the needle body is taken out, the wire body is left, and the device for guiding the position of the tumor cutting and detecting in accurate positioning before the operation cutting and detecting is realized.

The utility model aims at providing a wire body for positioning and marking, a needle body with a hollow cavity, a rotary head for winding the wire body, a cutter body for cutting the wire body, and a spanner member assembled on the adjacent cutter body; after the needle body penetrates into the machine body, the wrench piece is pressed to cut off the wire body, the wire body hidden in the hollow cavity penetrates into a designated position in the machine body along with the tip end of the needle body, and then the hidden wire body positioned in the hollow cavity is pulled out through the rotating head, so that the free end of the wire body is anchored at the designated position of the machine body; and then the needle body is taken out, the wire body is left, and the accurate positioning of the radiotherapy positioning device before radiotherapy is realized.

In order to achieve one of the above objects, a first technical solution of the present utility model is:

a positioning guide assembly includes a wire body for positioning and marking, a needle body having a hollow cavity, and a rotor for winding the wire body.

The wire body is provided with a positioning section and a connecting section;

the locating section is provided with a thorn-shaped structure partially or totally;

one end of the needle body is provided with a first through hole, and the other end of the needle body is provided with a second through hole;

the first through hole is communicated with the second through hole;

the rotating head is rotatably assembled on the outer wall of the needle body;

the connecting section of the wire body is wound on the rotating head, and the positioning section winds into the hollow cavity of the needle body from the first through hole of the needle body to form a wire body winding structure, so that the positioning section of the wire body can enter the machine body along with the needle body;

the locating section is pulled through the swivel, so that the locating section is separated from the first through hole and anchored in the target area, and locating and guiding of the operation position are realized.

Through continuous exploration and test, the utility model is provided with a wire body for positioning and marking, a needle body with a hollow cavity and a rotating head for winding the wire body, wherein the thorn-shaped structure of the wire body is hidden in the hollow cavity of the needle body, so that the needle body can conveniently penetrate into a designated position in a machine body along with the tip end part of the needle body, and the thorn-shaped structure positioned in the hollow cavity is pulled to the designated position of the machine body through the rotating head; and then the needle body is taken out, and the wire body is left, so that the accurate positioning before the operation cutting inspection is realized.

Furthermore, the wire body is of a flexible structure, and the side end of the wire body is provided with a barb structure; the flexible barb structure is sent to the appointed position in the machine body through the rigid needle body, then the rigid needle body is pulled out, only the flexible wire body is left, the risk of secondary damage caused by the movement of the positioning device can be avoided by utilizing the structure with the combination of the rigidity and the softness, the inconvenience that the needle needs to be punctured again for taking out when the puncture is inaccurate or the operation plan is changed is avoided, and the scheme is practical, practical and feasible, and ingenious in conception.

Furthermore, the rotary head is arranged, so that the wire body can be continuously and stably pulled out, the phenomenon that the wire body is pulled too hard due to sudden resistance loss is avoided, and the scheme is simple and practical.

As a preferred technical measure:

the adjacent rotating head is provided with a cutter body for cutting off the wire body, and the cutter body enables the positioning section of the wire body to be released to form a free end so that the wire body is conveniently placed in the machine body after being separated from the first through hole.

As a preferred technical measure:

a spanner piece is assembled on the adjacent cutter body, and the spanner piece is fixed with the wire body wound out of the hollow cavity, so that the wire body can be stretched tightly, and meanwhile, the extending direction of the wire body can be changed, so that the wire body can be abutted against the cutter body, and the cutter body can cut the wire body.

The thread body is divided into two parts, one part is arranged in the needle body, the other part is arranged outside the needle body, and the two ends of the thread are fixed, so that the thread is straightened, and the needle is conveniently inserted; cutting the wire body in the cavity of the needle body mainly aims at releasing the tail part of the wire body, then rotating the outer rotary head to pull the tail end of the wire body to move towards the inside of the body.

As a preferred technical measure:

the wrench piece is indirectly or directly assembled on the outer side wall of the needle body so as to facilitate a doctor to buckle the wrench;

one end of the needle body, which is in contact with the machine body, is provided with a sharp corner structure, so that the needle body can be penetrated into the machine body; the other end is provided with a thread which is convenient for twisting the needle.

As a preferred technical measure:

a reset spring is assembled on the spanner, one end of the reset spring is fixedly connected with the spanner, the other end of the reset spring is connected with the outer side wall of the needle body, the reset spring is arranged to facilitate resetting of the spanner on one hand, and the movement obstruction of the spanner is increased on the other hand, so that unnecessary tangential process is avoided.

As a preferred technical measure:

the rotating head is assembled on the needle body through a rotating shaft, can rotate unidirectionally or bidirectionally relative to the needle body, and realizes tightening and steady pulling of the wire body during wire body cutting so that the positioning section slowly falls out of the first through hole;

the rotary head can rotate unidirectionally and bidirectionally, the unidirectional rotation is realized by the structure of the unidirectional shaft, the rotary head is close to the needle body, and at the moment, the rotary head is mainly used for enabling the wire body to continuously move outwards and not move reversely, so that the wire body can be ensured to have enough tension, and when the wrench piece is further buckled, the cutter body is abutted against the wire body, the wire body cannot move, and the wire body can be easily cut off by the cutter body; the rotating head slips towards the direction far away from the needle body, so that the bidirectional rotation of the rotating head can be realized, and the wire body is mainly released outwards at the moment, so that the wire body is not pulled out after the needle body is pulled out.

As a preferred technical measure:

the line body is made of protein which can be absorbed by the machine body, the positioning section of the line body is provided with a section of bidirectional barb-shaped structure, and when the first through hole of the line body is positioned Duan Tuochu, the bidirectional barb-shaped structure can play a role in anchoring and is anchored in a target area, so that the positioning section is left at a fixed position without wandering. The line body is provided with a mark, so that the position relation of the positioning section relative to the first through hole can be indicated in real time.

The line body is provided with a marker, so that the position relationship between the free end of the line body and the first through hole can be prompted in real time.

The two-way barb structure is arranged, so that the line body can be effectively prevented from moving on the machine body, positioning and guiding are more accurate, when the barb structure is in contact with the machine body, resistance is obviously increased, the two-way barb structure is prompted to be unfolded after being separated from the first through hole, the two-way barb structure is anchored in a target area, and blind rotation of a rotating head is avoided.

After the positioning is finished, the swivel is loosened, the tail part of the wire body is cut off, if the treatment plan is changed, after a period of time, the wire body remained in the machine body can be catabolized, the secondary injury caused by taking the wire body can be effectively avoided, and the scheme is simple and practical.

The marker is a scale or a striking color or a knot for reminding an operator that the thread is completely pulled out from the needle point so as to avoid the error of pulling out the thread together with the needle.

The wire body positioned outside the needle body is tightly attached to the outer wall surface of the needle body, so that the damage to the body in the puncturing process is reduced as much as possible.

As a preferred technical measure:

the rotating head and the spanner component are sleeved with the needle body through a barrel component to form a rotating head-spanner external member, so that the rotating head-spanner external member is convenient to quickly disassemble and assemble with the needle body.

In order to achieve one of the above objects, a second technical solution of the present utility model is:

a positioning and guiding assembly, which comprises a positioning and guiding assembly,

comprises a wire body for positioning and marking, a needle body with a hollow cavity and a rotary head for winding the wire body;

the first through hole is communicated with the second through hole;

the rotating head is rotatably assembled on the outer wall of the needle body;

one end of the wire body is arranged outside the needle body wall, the other end of the wire body winds into the hollow cavity of the needle body from the first through hole of the needle body to form a wire body hiding structure, so that the wire body can locally enter the machine body along with the needle body, and positioning and guiding are realized through anchoring the target area.

Through continuous exploration and test, part of the wire body is hidden in the hollow cavity of the needle body, so that the wire body can be conveniently penetrated into a specified position in the machine body along with the tip end part of the needle body, and the wire body is pulled to be pulled to the specified position of the machine body; and then the needle body is taken out, and the wire body is left, so that the accurate positioning before the operation cutting inspection is realized.

Furthermore, the wire body is of a flexible structure, the flexible wire body is sent to the appointed position in the machine body through the rigid needle body, then the rigid needle body is pulled out, only the flexible wire body is left, the risk of secondary damage caused by the movement of the positioning device can be avoided by utilizing the structure with hardness and softness, the inconvenience that the wire body needs to be punctured again and taken out when the puncture is inaccurate or the operation plan is changed is avoided, and the scheme is practical, feasible and ingenious in conception.

In order to achieve one of the above objects, a third technical solution of the present utility model is:

a device for guiding the position of a tumor cutting,

a positioning guide assembly as described above;

the device comprises a wire body for detecting the position of a tumor, a needle body with a hollow structure, a rotary head for winding the wire body, a cutter body for cutting the wire body, and a spanner piece assembled on the adjacent cutter body;

the first through hole is communicated with the second through hole;

the rotating head is rotatably assembled on the outer wall of the needle body;

one end of the wire body is wound on the rotating head, and the other end of the wire body is wound into the hollow structure of the needle body from the first through hole of the needle body, is fixed with the spanner piece from the second through hole Kong Raochu, so that a wire body tightening structure is formed;

the cutter body is arranged adjacent to the second through hole, when the wrench piece is pulled, the wrench piece changes the extending direction of the wire body, so that the wire body can be abutted against the cutter body, the cutter body cuts off the wire body, and one end of the wire body is released to form a free end;

the rotating head rotates the winding wire body, so that the free end of the wire body is separated from the first through hole and anchored in the machine body, and positioning and guiding of the tumor are realized.

Through continuous exploration and test, the utility model is provided with a wire body for positioning and marking, a needle body with a hollow cavity, a rotary head for winding the wire body, a cutter body for cutting the wire body, and a spanner member assembled on the adjacent cutter body.

After the needle body penetrates into the machine body, the wrench piece is pressed to cut off the wire body, the wire body hidden in the hollow cavity penetrates into a designated position in the machine body along with the tip end of the needle body, and then the hidden wire body positioned in the hollow cavity is pulled out through the rotating head, so that the free end of the wire body is anchored at the designated position of the machine body; and then the needle body is taken out, and the wire body is left, so that the accurate positioning before the operation cutting inspection is realized.

In order to achieve one of the above objects, a fourth technical solution of the present utility model is:

a radiotherapy positioning device, which is applied to the positioning guide assembly;

the wire cutting device comprises a wire body for positioning and guiding, a needle body with a hollow structure, a rotary head for winding the wire body, a cutter body for cutting the wire body, and a spanner piece assembled on the adjacent cutter body;

the first through hole is communicated with the second through hole;

the rotating head is rotatably assembled on the outer wall of the needle body;

the rotor rotates and winds the wire body, so that the free end of the wire body is separated from the first through hole and anchored in the machine body, and the outer section of the shaking wire body is pulled, so that the positioning before radiotherapy is realized.

After the needle body penetrates into the machine body, the wrench piece is pressed to cut off the wire body, the wire body hidden in the hollow cavity penetrates into a designated position in the machine body along with the tip end of the needle body, and then the hidden wire body positioned in the hollow cavity is pulled out through the rotating head, so that the free end of the wire body is anchored at the designated position of the machine body; and then the needle body is taken out, the wire body is left, and the accurate positioning before radiotherapy is realized.

Compared with the prior art, the utility model has the following beneficial effects:

through continuous exploration and test, part of the wire body is hidden in the hollow cavity of the needle body, so that the wire body positioned in the hollow cavity can be conveniently pulled to the appointed position of the machine body by pulling or winding the wire body along with the pointed end of the needle body to penetrate into the appointed position of the machine body; and then the needle body is taken out, and the wire body is left, so that the accurate positioning before the operation cutting inspection is realized.

Further, the two-way barb-shaped structure which is convenient to anchor in the machine body is arranged on the wire body, the thorn-shaped structure of the wire body is hidden in the hollow cavity of the needle body, so that the needle body can conveniently penetrate into a designated position in the machine body along with the tip end part of the needle body, and the thorn-shaped structure positioned in the hollow cavity is pulled to the designated position of the machine body through the rotating head; and then the needle body is taken out, and the wire body is left, so that the accurate positioning before the operation cutting inspection is realized.

Drawings

FIG. 1 is a first construction diagram of the present utility model;

FIG. 2 is a diagram of a second construction of the present utility model;

FIG. 3 is a diagram of a third construction of the present utility model;

FIG. 4 is a fourth construction diagram of the present utility model;

FIG. 5 is an enlarged view of a portion of the structure of the present utility model;

fig. 6 is a diagram of an additional sleeve structure of the present utility model.

Reference numerals illustrate:

1. a needle body; 2. a wire body; 3. turning the head; 4. a wrench member; 5. a cutter body; 6. a barrel; 7. a marker; 11. a first through hole; 12. a second through hole; 13. a hollow cavity; 14. a thread; 21. a connection section; 22. a positioning section; 23. and (3) barbs.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

On the contrary, the utility model is intended to cover any alternatives, modifications, equivalents, and variations as may be included within the spirit and scope of the utility model as defined by the appended claims. Further, in the following detailed description of the present utility model, certain specific details are set forth in order to provide a better understanding of the present utility model. The present utility model will be fully understood by those skilled in the art without the details described herein.

It is to be noted that when two elements are "fixedly connected" or "rotatably connected," the two elements may be directly connected or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.

As shown in fig. 1, a first embodiment of the positioning guide assembly of the present utility model:

comprises a wire body for positioning and marking, a needle body 1 with a hollow cavity 13;

one end of the needle body 1 is provided with a first through hole 11, and the other end is provided with a second through hole 12;

the first through hole 11 is communicated with the second through hole 12;

the rotary head 3 is rotatably assembled on the outer wall of the needle body 1;

the needle body outside that the one end of the line body was placed, the other end is followed the first through-hole 11 of needle body 1 and is wound into the cavity 13 of needle body 1, forms the line body and hides the structure for line body part can get into the organism inside along with needle body 1, realizes cutting the location guide of examining the position.

As shown in fig. 2, a second embodiment of the positioning guide assembly of the present utility model:

comprises a wire body 2 for positioning and marking, a needle body 1 with a hollow cavity 13, and a rotary head 3 for winding the wire body 2;

the wire body 2 is provided with a positioning section 22 and a connecting section 21;

the positioning section 22 is provided with a bidirectional barb-shaped structure partially or totally;

the first through hole 11 is communicated with the second through hole 12;

the connecting section 21 of the wire body 2 is wound on the rotating head 3, and the positioning section 22 winds into the hollow cavity 13 of the needle body 1 from the first through hole 11 of the needle body 1 to form a wire body 2 winding structure, so that the positioning section 22 of the wire body 2 can enter the machine body along with the needle body 1;

the positioning section 22 is pulled by the swivel 3, so that the positioning section 22 is anchored in the machine body, and the positioning and guiding of the operation position are realized.

As shown in fig. 3, a third embodiment of the positioning guide assembly of the present utility model:

a positioning guide assembly comprises a wire body 2 for positioning and marking, a needle body 1 with a hollow cavity 13, and a rotary head 3 for winding the wire body 2;

the first through hole 11 is communicated with the second through hole 12;

one end of the wire body 2 is wound on the rotating head 3, the other end of the wire body is wound into the hollow cavity 13 of the needle body 1 from the first through hole 11 of the needle body 1 and is wound out from the second through hole 12 to form a wire body 2 winding structure, so that the wire body 2 can enter the machine body along with the needle body 1;

the end of the wire body 2 is anchored in the machine body by the rotation and traction of the rotary head 3, so that the positioning and guiding of the cutting position are realized.

As shown in fig. 4-5, a specific embodiment of the structure of the added tangent body 2 of the present utility model is as follows:

the adjacent second through holes 12 are provided with cutter bodies 5 for cutting the wire bodies 2, and the cutter bodies 5 enable one ends of the wire bodies 2 to be released to form free ends so that the end portions of the wire bodies 2 are anchored in the machine body.

The adjacent cutter body 5 is provided with a spanner 4, and the spanner 4 is fixed with the wire body 2 wound out from the second through hole 12, so that the wire body 2 can be tightened, and meanwhile, the extending direction of the wire body 2 can be changed, so that the wire body 2 can be abutted against the cutter body 5, and the cutter body 5 can cut the wire body 2.

The wrench member 4 is indirectly or directly assembled on the outer side wall of the needle body 1 so as to facilitate the wrench to be pulled by a doctor;

the end, which is in contact with the machine body, of the needle body 1 is provided with a sharp angle structure, so that the needle body 1 can be penetrated into the machine body; the other end is provided with a thread 14 which facilitates twisting of the needle.

And a reset spring is assembled on the spanner piece 4, one end of the reset spring is fixedly connected with the spanner piece 4, and the other end of the reset spring is connected with the outer side wall of the needle body 1.

The specific embodiment of the structure of the winding body 2 comprises:

the rotating head 3 is assembled on the needle body 1 through a rotating shaft, can bidirectionally rotate relative to the needle body 1, realizes the forward and reverse winding of the wire body 2, and completes the wire winding and the wire releasing of the wire body 2.

A specific embodiment of the material of the wire body 2 of the present utility model:

the wire body 2 is made of protein which can be absorbed by a machine body, a marker 7 is arranged on the wire body, the position relation between the free end of the wire body and the first through hole 11 can be indicated, and a plurality of bi-directional barbs 23 are arranged at the end of the wire body, which is contacted with the machine body.

After the positioning is finished, the tail part of the wire body 2 is cut off, the wire body 2 remained in the machine body can be catabolized, the secondary injury caused by taking the wire body 2 is effectively avoided, and the scheme is simple and practical.

As shown in fig. 6, one embodiment of the present utility model adds a sleeve structure:

the rotating head 3 and the spanner part 4 are sleeved with the needle body 1 through a cylinder part 6 to form a rotating head-spanner suite, so that the rotating head-spanner suite is convenient to quickly disassemble and assemble the needle body 1 and prolong the needle body 1.

The utility model relates to a specific embodiment of a tumor cutting calibration position guide device:

a device for guiding the position of a tumor cutting,

a positioning guide assembly as described above;

the device comprises a wire body 2 for detecting the cutting of the tumor, a needle body 1 with a hollow structure, a rotary head 3 for winding the wire body 2, a cutter body 5 for cutting the wire body 2, and a wrench piece 4 assembled on the adjacent cutter body 5;

the first through hole 11 is communicated with the second through hole 12;

one end of the wire body 2 is wound on the rotary head 3, the other end of the wire body is wound into the hollow structure of the needle body 1 from the first through hole 11 of the needle body 1, and is wound out from the second through hole 12, and then the wire body is fixed with the spanner piece 4 to form a tightening structure of the wire body 2;

the cutter body 5 is arranged adjacent to the second through hole 12, when the wrench 4 is pulled, the wrench 4 changes the extending direction of the wire body 2, so that the wire body 2 can be abutted against the cutter body 5, the cutter body 5 cuts off the wire body 2, and one end of the wire body 2 is released to form a free end;

the rotating head 3 rotates the winding wire body 2, so that the free end of the wire body 2 is anchored in the machine body, and the positioning and guiding of the tumor are realized.

One specific embodiment of the radiotherapy positioning device of the utility model is as follows:

a positioning device for radiotherapy,

a positioning guide assembly is applied;

the wire cutting device comprises a wire body 2 for positioning and guiding, a needle body 1 with a hollow structure, a rotary head 3 for winding the wire body 2, a cutter body 5 for cutting the wire body 2, and a spanner piece 4 assembled on the adjacent cutter body 5;

the first through hole 11 is communicated with the second through hole 12;

the rotating head 3 rotates the winding wire body 2, so that the free end of the wire body 2 is anchored in the body, and positioning before radiotherapy is realized.

A preferred embodiment of the utility model:

a cutting verification position guide assembly mainly comprises a needle body 1, a wire body 2 and a turning head-spanner suite.

The needle body 1 is of a hollow structure, the wire body 2 is wrapped in the hollow structure, the tail end of the wire body 2 is 1-2cm in a fishbone-like design (a two-way barb structure, a mark wire body 2 knot is arranged at the boundary of the barb 23 direction), the tail end is connected with one end of the spanner piece 4, and when the spanner piece 4 is buckled, the wire body 2 can be pulled, so that the transversely arranged cutter body 5 cuts off the tail of the wire body 2, and the tail of the wire body 2 is released to be a free end.

The tip of the needle body 1 is provided with a small hole (a first through hole 11), after the wire body 2 comes out of the small hole at the tip, the head end of the wire body 2 is bound on the rotating head 3 of the rotating head-wrench suite, and the free end of the wire body 2 can be pulled unidirectionally or bidirectionally by rotating the rotating head 3 to be separated from the first through hole 11.

The thread body 2 is made of protein and has a property of being absorbed by human tissue.

Before operation, the needle point of the needle body 1 of the assembly is positioned to a target area through an imaging technology (such as ultrasound, CT and the like), a spanner piece 4 is buckled, the tail free end of the wire body 2 is released, the wire body 2 is pulled outwards through a hole (a first through hole 11) of the needle body 1 by rotating a rotary head 3, and when a 'click' touch is felt, a marker on the wire body is combined to prompt that the boundary of the tail barb 23 of the wire body 2 is reached; the barb structure at the tail end of the wire body 2 can be unfolded after being discharged out of the hole of the needle body 1, and the free end of the wire body 2 can be prevented from moving in different directions by the bidirectional barb design; when the resistance increases, the spanner 4 and the rotating head 3 sleeve member are removed, the needle body 1 is slowly pulled out, the guide wire body 2 with proper length is left, scales (markers 7) are arranged on the wire body 2, the relative positions of the tumor and the scales can be marked, the cutter is cut off, and the positioning work is finished, so that the tumor is searched along the guide wire body 2 outside during the operation.

If the operation arrangement is canceled after the positioning, the tail part of the wire body 2 is cut off, and the wire body 2 remained in the body can be catabolized. In addition, the device can also be used for positioning before radiotherapy, and when the needle body 1 is separated, the guide wire body 2 can be pulled to enable the target position tissue to regularly and stably move, so that real-time position indication under the image can be realized.

The utility model has simple structure and low cost, can solve the core problems in clinic, improve the operation efficiency, protect patients and save the medical cost.

The operation process of the utility model comprises the following steps:

1. positioning the needle body 1 at a predetermined position with the aid of an imaging technique;

2. folding the wrench 4, releasing the free end, rotating the rotary head 3, pulling the free end out of the hole of the needle body 1, and after a click feeling is felt, combining the marker on the thread body to prompt that the free end is about to completely separate from the needle hole of the needle body 1, and stopping rotating the rotary head 3 when the resistance is felt to increase;

3. the whole rotating head 3 is pulled out from the needle body 1, the needle body 1 is pulled out, the tail part of the wire body 2 is left with proper length, and the positioning is finished;

4. the tumor can be separated along the guide wire body 2 which is left outside during operation, and the relative position relation between the separation position and the tumor can be judged according to the scales on the wire body 2.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.

Claims

1. A positioning guide assembly is characterized in that,

comprises a wire body (2) for positioning and marking, a needle body (1) with a hollow cavity (13), and a rotary head (3) for winding the wire body (2);

a positioning section (22) and a connecting section (21) are arranged on the wire body (2);

the locating section (22) is provided with a thorn-shaped structure partially or totally;

one end of the needle body (1) is provided with a first through hole (11);

the first through hole (11) is communicated with the second through hole (12);

the rotary head (3) is rotatably assembled on the outer wall of the needle body (1);

the connecting section (21) of the wire body (2) is wound on the rotating head (3), the positioning section (22) winds into the hollow cavity (13) of the needle body (1) from the first through hole (11) of the needle body (1) to form a wire body (2) winding structure, so that the positioning section (22) of the wire body (2) can enter the machine body along with the needle body (1);

the positioning section (22) is pulled by the swivel (3) so that the positioning section (22) moves into the machine body to realize positioning and guiding.

2. A positioning guide assembly as defined in claim 1, wherein,

the adjacent rotating heads are provided with cutter bodies (5) for cutting off the wire bodies (2), and the cutter bodies (5) enable the positioning sections (22) of the wire bodies (2) to be released to form free ends so that the wire bodies (2) can be left in the machine body after being separated from the first through holes (11).

3. A positioning guide assembly as defined in claim 2, wherein,

a spanner (4) is assembled on the adjacent cutter body (5), and the spanner (4) is fixed with the wire body (2) wound out of the hollow cavity, so that the wire body (2) can be tightened, and meanwhile, the extending direction of the wire body (2) can be changed, so that the wire body (2) can be abutted against the cutter body (5), and the cutter body (5) can cut the wire body (2).

4. A positioning guide assembly as defined in claim 3, wherein,

the wrench piece (4) is indirectly or directly assembled on the outer side wall of the needle body (1) so as to facilitate a doctor to buckle the wrench;

one end of the needle body (1) which is in contact with the machine body is provided with a sharp angle structure, so that the needle body (1) can be penetrated into the machine body; the other end is provided with a thread (14) which is convenient for twisting the needle.

5. A positioning guide assembly as defined in claim 4, wherein,

and a reset spring is assembled on the spanner (4), one end of the reset spring is fixedly connected with the spanner (4), and the other end of the reset spring is connected with the outer side wall of the needle body (1).

6. A positioning guide assembly as defined in claim 1, wherein,

the rotating head (3) is assembled on the needle body (1) through a rotating shaft, can rotate unidirectionally or bidirectionally relative to the needle body (1), and can realize tightening when the wire body (2) is cut and stably pull the wire body (2) to enable the positioning section (22) to slowly deviate from the first through hole (11);

the wire body (2) is made of protein which can be absorbed by a machine body, and a positioning section (22) of the wire body is provided with a section of bidirectional barb-shaped structure (23);

when the positioning section (22) is separated from the first through hole (11), the bidirectional barb-shaped structure (23) plays an anchoring role, so that the positioning section (22) is left at a fixed position and does not run;

a mark is arranged on the wire body (2) and indicates the position relation of the positioning section (22) relative to the first through hole in real time;

the thread body (2) positioned outside the needle body (1) is tightly attached to the outer wall surface of the needle body.

7. A positioning guide assembly according to any one of claims 1-6,

the rotating head (3) and the spanner (4) are sleeved with the needle body (1) through a cylinder (6) to form a rotating head-spanner suite so as to be convenient for quick disassembly and assembly with the needle body (1).

8. A positioning guide assembly is characterized in that,

one end of the needle body (1) is provided with a first through hole (11), and the other end is provided with a second through hole (12);

the first through hole (11) is communicated with the second through hole (12);

one end of the wire body (2) is arranged outside the needle body wall, the other end of the wire body is wound into the hollow cavity (13) of the needle body (1) from the first through hole (11) of the needle body (1), a wire body (2) hiding structure is formed, the wire body (2) can locally enter the machine body along with the needle body (1), and positioning and guiding are achieved through an anchoring target area.

9. A device for guiding the position of a tumor cutting device is characterized in that,

use of a positioning guide assembly according to any of claims 1-8;

the device comprises a wire body (2) for detecting the position of the tumor, a needle body (1) with a hollow structure, a rotary head (3) for winding the wire body (2), a cutter body (5) for cutting the wire body (2), and a spanner piece (4) assembled on the adjacent cutter body (5);

the first through hole (11) is communicated with the second through hole (12);

one end of the wire body (2) is wound on the rotating head (3), the other end of the wire body is wound into the hollow structure of the needle body (1) from the first through hole (11) of the needle body (1) and is wound out from the second through hole (12), and then the wire body is fixed with the spanner piece (4) to form a tightening structure of the wire body (2);

the cutter body (5) is arranged adjacent to the second through hole (12), when the wrench piece (4) is pulled, the wrench piece (4) changes the extending direction of the wire body (2) so that the wire body (2) can be abutted against the cutter body (5), the cutter body (5) cuts off the wire body (2), and one end of the wire body (2) is released to form a free end;

the rotating head (3) rotates to wind the wire body (2) so that the free end of the wire body (2) is separated from the first through hole (11) and anchored in the machine body to realize positioning and guiding of the tumor.

10. A radiotherapy positioning device is characterized in that,

use of a positioning guide assembly according to any of claims 1-8;

the wire cutting device comprises a wire body (2) for positioning and guiding, a needle body (1) with a hollow structure, a rotary head (3) for winding the wire body (2), a cutter body (5) for cutting the wire body (2), and a spanner piece (4) assembled on the adjacent cutter body (5);

the first through hole (11) is communicated with the second through hole (12);

the rotating head (3) rotates to wind the wire body (2) so that the free end of the wire body (2) is separated from the first through hole (11) and anchored in the body, and the outer section of the wire body (2) is pulled to shake, so that the positioning before radiotherapy is realized.