CN212395039U - Microwave ablation puncture orienting device - Google Patents

Abstract

The utility model discloses a microwave ablation puncture orienting device, including endotheca, overcoat and puncture needle core, the overcoat cover is established in the outside of endotheca, is equipped with first opening on the overcoat global, is equipped with the second opening on the endotheca global, and the endotheca can rotate or remove along the fore-and-aft direction for the overcoat to make second opening and first opening stagger completely or partially stagger or coincide, puncture needle core can stretch into or take out from the endotheca, and when puncture needle core took out from the endotheca, the endotheca was used for placing microwave ablation needle. And adjusting the size of the overlapped part of the second opening and the first opening according to the size of the focus, so that the overlapped part is aligned with the focus, thereby quickly defining the position of ablation. And then the microwave ablation needle is stretched into the inner sleeve, so that a microwave emitting source of the microwave ablation needle is positioned at the position where the first opening and the second opening are overlapped, the focus can be directionally ablated, the precise ablation is realized, the damage to human tissues is avoided, and the stability and the reliability of the operation are improved.

Description

Microwave ablation puncture orienting device

Technical Field

The utility model is used for microwave ablation technical field especially relates to a microwave ablation puncture orienting device.

Background

The incidence of cancer has increased year by year, with bone being the most common site of metastasis for cancer and the spine being the most common site of bone metastasis. In recent years, microwave ablation technology has been widely applied to clinical treatment of spinal metastases, which not only can relieve pain, but also can control the progress of local tumors, and for single-shot bone metastases, percutaneous microwave ablation can also achieve the purpose of healing. The microwave ablation needle technology adopts CT guiding and positioning, a puncture needle is inserted into a focus of a bone after being punctured percutaneously, a needle core is pulled out, the ablation needle is inserted into the focus through a coaxial sheath, a needle head is used as a microwave emission source, the temperature is raised (more than 50 ℃) through microwave power radiation, and the temperature is kept for a period of time (a few minutes), so that tumor tissues in the area are coagulated, denatured and permanently dead, an ellipsoidal coagulated dead zone is formed in the focus, and the purpose of inactivating cancerated tissues is achieved.

It has the following disadvantages: the ablation needle cannot realize directional ablation. Because the anatomical structure of the spine is complex, important peripheral nerve vessels are more, the shape of the tumor is not fixed, when the tumor focus is clinically ablated, tissues which are not yet diseased can be solidified at the edge of the focus, the wound surface of the tissues of a human body is enlarged, and the injuries of the nerves and the blood vessels are easily caused. The ablation needle is unable to deliver treatment to metastases adjacent to the vascular nerve, eventually resulting in tumor residue and recurrence.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a microwave ablation puncture orienting device, it can realize prescribing a limit to the position that melts fast, realizes accurate melting, avoids causing the damage to human tissue, improves the stability and the reliability of operation.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a microwave ablation puncture orienting device, includes endotheca, overcoat and puncture needle core, the overcoat cover is established the outside of endotheca, be equipped with first opening on the global of overcoat, be equipped with the second opening on the global of endotheca, the endotheca can for the overcoat rotates or moves along the fore-and-aft direction, so that the second opening with first opening staggers completely or partially staggers or coincides, puncture needle core can stretch into or take out from the endotheca, when puncture needle core takes out from the endotheca, the endotheca is used for placing the microwave ablation needle.

In combination with the above implementation manner, in certain implementation manners of the present invention, the rear end of the inner sleeve is provided with a rotating handle, and the rotating handle is provided with a first through hole communicated with the inner sleeve.

In combination with the above implementation manner, the utility model discloses an in some implementation manners, the rear end of overcoat is equipped with the base, be equipped with the arch on the base, the twist grip of endotheca is equipped with a plurality of draw-in grooves along circumference evenly distributed, protruding with the draw-in groove cooperation.

In combination with the above implementation manner, the utility model discloses an in some implementation manners, be equipped with the second through-hole that sets up along the fore-and-aft direction on the twist grip, be equipped with adjusting part in the second through-hole.

In combination with the foregoing implementation manner, in certain implementations of the present invention, the second through hole includes an inner screw hole, the front portion of the adjusting member is provided with an outer screw, the adjusting member passes through the outer screw with the inner screw hole is matched, the adjusting member in the rear portion of the outer screw is provided with a length scale mark.

In combination with the above implementation manner, the utility model discloses an in some implementation manners, the base is in being close to be equipped with first angle scale mark on the terminal surface of twist grip, first angle scale mark is used for the sign first opening is at ascending position in week, be equipped with second angle scale mark on twist grip's the rear end face, second angle scale mark is used for the sign second opening is at ascending position in week.

In combination with the above implementation manner, the utility model discloses an among certain implementation manners, first opening in the front and back ascending projection with first angle scale mark coincidence, the second opening in the front and back ascending projection with second angle scale mark coincidence, be equipped with on the twist grip and be used for watching the observation window of first angle scale mark.

In combination with the above implementation, in certain implementations of the present invention, the front end of the outer sleeve is serrated.

In combination with the above implementation manner, in certain implementation manners of the present invention, the front end of the puncture needle core is tapered, and the rear end of the puncture needle core is provided with a needle core handle.

In combination with the above implementation manners, in some implementation manners of the present invention, the inner surface of the inner sleeve and the outer sleeve are both provided with a microwave absorbing layer.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the microwave ablation puncture orienting device is inserted into a focus after percutaneous puncture by a puncture needle core, then the puncture needle core is pulled out from the inner sleeve, and the second opening and the first opening are completely staggered or partially staggered or overlapped through relative rotation or back-and-forth movement between the inner sleeve and the outer sleeve. And adjusting the size of the overlapped part of the second opening and the first opening according to the size of the focus, so that the overlapped part is aligned with the focus, thereby quickly defining the position of ablation. And then the microwave ablation needle is stretched into the inner sleeve, so that a microwave emitting source of the microwave ablation needle is positioned at the position where the first opening and the second opening are overlapped, the focus can be directionally ablated, the precise ablation is realized, the damage to human tissues is avoided, and the stability and the reliability of the operation are improved.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the outer cover of the embodiment shown in FIG. 1;

FIG. 3 is a schematic structural view of an inner sleeve of the embodiment shown in FIG. 1;

FIG. 4 is a schematic structural view of the lancet core of the embodiment shown in FIG. 1;

FIG. 5 is a schematic view of an embodiment of the present invention in use with the first and second openings overlapping;

FIG. 6 is a schematic view of an embodiment of the present invention showing the first and second openings partially overlapping;

FIG. 7 is a side view of the twist grip and base of the embodiment of FIG. 1;

FIG. 8 is a schematic view of an embodiment of the present invention with the first and second openings completely circumferentially staggered;

fig. 9 is a schematic view of the first opening and the second opening circumferentially coinciding according to an embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 to 4, the embodiment of the present invention provides a microwave ablation puncture orienting device, which includes an inner sleeve 1, an outer sleeve 2 and a puncture needle core 3, wherein the outer sleeve 2 is sleeved outside the inner sleeve 1, the circumferential surface of the outer sleeve 2 is provided with a first opening 21, the circumferential surface of the inner sleeve 1 is provided with a second opening 11, the inner sleeve 1 can rotate relative to the outer sleeve 2 or move along the front-back direction, so that the second opening 11 and the first opening 21 are completely staggered or partially staggered or overlapped. The puncture needle core 3 can extend into or be drawn out of the inner sleeve 1, and when the puncture needle core 3 is drawn out of the inner sleeve 1, the inner sleeve 1 is used for placing the microwave ablation needle 4. Referring to fig. 8, when the first opening 21 and the second opening 11 are completely staggered, the microwave ablation needle 4 placed in the inner sheath 1 cannot emit microwaves to the lesion or human tissue located outside the outer sheath 2; referring to fig. 5, 6 and 9, when the first opening 21 and the second opening 11 are partially staggered or overlapped, the microwave ablation needle 4 placed in the inner sheath 1 can emit microwaves to the lesion or human tissue located outside the outer sheath 2.

The microwave ablation puncture orienting device is inserted into a focus after percutaneous puncture by a puncture needle core 3, then the puncture needle core 3 is pulled out from the inner sleeve 1, and the second opening 11 and the first opening 21 are completely staggered or partially staggered or overlapped through relative rotation or back-and-forth movement between the inner sleeve 1 and the outer sleeve 2. The size of the overlap of the second opening 11 and the first opening 21 is adjusted according to the size of the lesion so that the overlap is aligned with the lesion, thereby rapidly defining the location of ablation. Then, the microwave ablation needle 4 is inserted into the inner sleeve 1, referring to fig. 5 and 6, so that the microwave emission source 41 of the microwave ablation needle 4 is located at the position where the first opening 21 and the second opening 11 are overlapped, directional ablation can be performed on the focus, accurate ablation is realized, damage to human tissues is avoided, and the stability and reliability of the operation are improved.

Referring to fig. 1 and 2, in some embodiments, the rear end of the inner sleeve 1 is provided with a rotation handle 12 to facilitate rotation of the inner sleeve 1 to adjust the relative positions of the first opening 21 and the second opening 11 in the circumferential direction. The rotating handle 12 is provided with a first through hole 13 communicated with the inner sleeve 1, so that the puncture needle core 3 or the microwave ablation needle 4 extends into the inner sleeve 1 through the first through hole 13, and the smooth operation is ensured.

Referring to fig. 1, 3 and 7, in some embodiments, the rear end of the outer sleeve 2 is provided with a base 22, the base 22 is provided with a communication hole 25 communicating with the outer sleeve 2, and the inner sleeve 1 extends into the outer sleeve 2 through the communication hole 25. The base 22 is provided with a bulge 23, the rotating handle 12 of the inner sleeve 1 is provided with a plurality of clamping grooves which are uniformly distributed along the circumferential direction, and the bulge 23 is matched with the clamping grooves. After the relative position of the first opening 21 and the second opening 11 is adjusted, the inner sleeve 1 can be pushed forward to enable the protrusion 23 and the clamping groove to be clamped, so that circumferential limitation is performed, the phenomenon that the inner sleeve 1 and the outer sleeve 2 rotate relatively in the ablation process is prevented, and the ablation accuracy is ensured. It will be appreciated that the locking of the positions of the inner and outer sleeves 1, 2 may also be achieved by providing a groove in the base 22, a projection on the swing handle 12, etc. The number of the clamping grooves can be set according to the ablation precision requirement, and the number of the clamping grooves determines the amplitude of a single rotation angle. The higher the precision requirement, the greater the number of card slots provided.

Referring to fig. 1, 2, 5 and 6, in some embodiments, the rotating handle 12 is provided with a second through hole 14 arranged along the front-back direction, an adjusting member 15 is arranged in the second through hole 14, and the adjusting member 15 can move along the front-back direction in the second through hole 14 to abut against the base 22, so as to adjust the distance between the inner sleeve 1 and the outer sleeve 2 in the front-back direction, and further adjust the position relation between the first opening 21 and the second opening 11 in the front-back direction, thereby achieving the purpose of orientation.

The adjusting member 15 can be a pin, a screw, etc., and the second through hole 14 is a light hole or a screw hole. Referring to fig. 2, 5 and 6, in some embodiments, the second through hole 14 includes an internal screw hole, and the front portion of the adjusting member 15 is provided with an external screw, and the adjusting member 15 is conveniently adjusted in distance between the outer sleeve 2 and the inner sleeve 1 in the front and rear directions by engaging the external screw with the internal screw hole. The adjusting member 15 is provided with a length scale mark at the rear of the outer thread to confirm the distance of the inner sleeve 1 moving backward relative to the outer sleeve 2, which is convenient for the user to use, so that the first opening 21 and the second opening 11 are more accurately oriented in the front-rear direction.

Referring to fig. 1, after the microwave ablation puncture positioning device is guided into the focal zone by CT, the puncture needle core 3 is removed. By rotating the inner sleeve 1 and the outer sleeve 2, the overlapped part of the first opening 21 and the second opening 11 in the circumferential direction meets the size requirement of a focus to be ablated, the inner sleeve 1 is pushed to move forwards, the clamping groove is matched with the protrusion 23, and therefore relative displacement of the inner sleeve 1 and the outer sleeve 2 in the circumferential direction is limited, and the reference of fig. 7 is made. The front-back distance of the inner sleeve 1 and the outer sleeve 2 is adjusted by the adjusting component 15, so that the overlapped part of the first opening 21 and the second opening 11 in the front-back direction meets the size requirement of a focus to be ablated, the inner sleeve 1 can move in the front-back direction under the driving of the adjusting component 15 and the guiding of the bump, and the overlapped part of the first opening 21 and the second opening 11 in the front-back direction and the circumferential direction can be determined, so that the ablation position can be quickly defined. Referring to fig. 5 and 6, the microwave ablation needle 4 extends the microwave emission source 41 into the inner sheath 1 along the inner sheath 1, and when the microwave emission source 41 reaches the overlapping portion of the first opening 21 and the second opening 11, the microwave can be emitted, and the ablation can be performed accurately, so as to achieve the purpose of killing the cancerous tissue. Meanwhile, the damage to human health tissues is avoided, and the stability and the reliability of the operation are improved.

Referring to fig. 7, in some embodiments, the base 22 is provided with a first angle scale 24 on an end surface close to the rotating handle 12, the first angle scale 24 is used for marking a position of the first opening 21 in a circumferential direction, the rear end surface of the rotating handle 12 is provided with a second angle scale 15, and the second angle scale 15 is used for marking a position of the second opening 11 in the circumferential direction. By providing the first angle graduation mark 24 and the second angle graduation mark 15, it is convenient to confirm the relative positions of the first opening 21 and the second opening 11 in the circumferential direction.

The specific position of the first angle scale 24 on the base 22 and the specific position of the second angle scale 15 on the rotary handle 12 can be set according to the size of the base 22 and the rotary handle 12. Referring to fig. 7, in some embodiments, the projection of the first opening 21 in the front-back direction coincides with the first angle scale line 24, and the projection of the second opening 11 in the front-back direction coincides with the second angle scale line 15, so that the user can visually see the relative positions of the first angle scale line 24 and the second angle scale line 15 in the circumferential direction. The rotating handle 12 is provided with an observation window for observing the first angle scale 24, and the observation window is convenient for a user to observe the first angle scale 24, namely, to identify the position of the first opening 21 in the circumferential direction.

Referring to fig. 1 and 3, in some embodiments, the front end of the outer sleeve 2 is serrated, and when the microwave ablation puncture direction finder enters the bone tissue or other parts of the human body in a spiral advancing manner, the serrated front end of the outer sleeve 2 is beneficial to opening a channel, so that the microwave ablation puncture direction finder can conveniently enter the tissue of the human body.

Referring to fig. 1, the front end of the puncture needle core 3 is tapered, and the tapered front end can puncture the epidermis and extend into the bone or other tissues of the human body to perform slotting so as to reach the focus area. The rear end of the puncture needle core 3 is provided with a needle core handle 31, which is convenient for holding the puncture needle core 3.

When the microwave ablation needle 4 emits microwaves aligned with the coinciding positions of the first opening 21 and the second opening 11, the microwaves affect the bodies of the inner sleeve 1 and the outer sleeve 2 near the openings, so that the inner sleeve 1 and the outer sleeve 2 generate heating phenomena, and the healthy tissues of a human body are affected to a certain extent. In some embodiments, the inner surfaces of the inner sleeve 1 and the outer sleeve 2 are both provided with microwave absorbing layers to prevent the inner sleeve 1 and the outer sleeve 2 from heating up due to the microwave transmitting through the inner sleeve 1 and the outer sleeve 2. The microwave absorbing layer can well absorb microwaves in a non-target direction, avoid the heating phenomenon of human healthy tissues, namely non-target tissues, and avoid the damage to healthy human tissues around the focus. It is understood that the microwave absorbing layer can be made of microwave absorbing materials such as lithium cadmium ferrite, lithium zinc ferrite, ultrafine metal particles, etc. Wherein, the inner sleeve 1 and the outer sleeve 2 can also be made of microwave absorbing materials.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (10)

1. The utility model provides a microwave ablation puncture orienting device which characterized in that, includes endotheca, overcoat and puncture needle core, the overcoat cover is established the outside of endotheca, be equipped with first opening on the global of overcoat, be equipped with the second opening on the global of endotheca, the endotheca can for the overcoat rotates or moves along the fore-and-aft direction, so that the second opening with first opening staggers completely or partially staggers or coincide, puncture needle core can stretch into or take out from the endotheca, when puncture needle core takes out from the endotheca, the endotheca is used for placing microwave ablation needle.

2. The microwave ablation puncture direction device of claim 1, wherein the inner sleeve has a rotating handle at a rear end thereof, the rotating handle having a first through hole communicating with the inner sleeve.

3. The microwave ablation puncture direction device as claimed in claim 2, wherein the rear end of the outer sleeve is provided with a base, the base is provided with a protrusion, the rotating handle of the inner sleeve is provided with a plurality of clamping grooves evenly distributed along the circumferential direction, and the protrusion is matched with the clamping grooves.

4. The microwave ablation puncture direction device according to claim 3, wherein the rotating handle is provided with a second through hole arranged along the front-back direction, and the second through hole is provided with an adjusting component.

5. The microwave ablation puncture direction device according to claim 4, wherein the second through hole comprises an inner threaded hole, an outer thread is arranged at the front part of the adjusting part, the adjusting part is matched with the inner threaded hole through the outer thread, and a length scale mark is arranged behind the outer thread of the adjusting part.

6. The microwave ablation puncture direction device of claim 3, wherein the base is provided with a first angle scale mark on an end surface near the rotating handle, the first angle scale mark being used for marking the position of the first opening in the circumferential direction, and a second angle scale mark on a rear end surface of the rotating handle, the second angle scale mark being used for marking the position of the second opening in the circumferential direction.

7. The microwave ablation puncture direction device according to claim 6, wherein the projection of the first opening in the front-back direction coincides with the first angle scale line, the projection of the second opening in the front-back direction coincides with the second angle scale line, and the rotating handle is provided with a viewing window for viewing the first angle scale line.

8. The microwave ablation puncture direction device of claim 1, wherein the front end of the outer sleeve is serrated.

9. The microwave ablation puncture direction device according to claim 1, wherein the front end of the puncture needle core is conical, and the rear end of the puncture needle core is provided with a needle core handle.

10. The microwave ablation puncture direction device of claim 1, wherein the inner and outer sleeves have microwave absorbing layers on their inner surfaces.

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