CN115429405A - Painful puncture trocar and needle outer tube - Google Patents

Abstract

The invention provides a pain puncture trocar and an outer needle tube, which comprise an outer needle tube and an inner needle tube, wherein the inner needle tube and the outer needle tube are matched in shape and size and are detachably sleeved in the outer needle tube, the outer needle tube comprises a tube front surface and a tube back surface, the tube front surface and the tube back surface are integrally connected to form a working channel, the working channel is longitudinally positioned in the middle of the outer needle tube, the front end of the tube front surface is provided with a binding surface, the front end of the tube back surface is provided with a sliding surface, the sliding surface comprises an arc surface and a tube inclined surface, the outlet of the working channel is positioned on the tube inclined surface, the sliding surface is suitable for sliding along the bone surface, the binding surface is suitable for binding the bone surface at a treatment position, the needle insertion path can be changed, and the binding surface is larger so as to achieve a better treatment effect.

Description

Painful puncture trocar and needle outer tube

Technical Field

The invention relates to the field of medical appliance articles, in particular to a painful puncture trocar and an outer needle tube for relieving pain.

Background

In pain treatment, a plurality of clinical application methods including medicines, puncture, radio frequency, operation and the like have advantages and disadvantages aiming at different pains. In recent years, most of the treatments for puncture and radio frequency therapy after puncture are mainly used for nerve modulation or damage to relieve pain, and are particularly applied to the treatment of many chronic, intractable or malignant pains. The therapeutic effect depends on the relationship between the puncture needle and the position of the electrode built in the puncture needle and the nerve, the closer the puncture needle is to the painful nerve, the better the effect is, otherwise, the poor effect is.

Most of the puncture needles used at present are straight or fixedly bent, and the puncture needles have the following defects: firstly, in the puncture process, the puncture path is not adjustable, so that organs, blood vessels and nerve tissues are easy to puncture, more complications are caused, and secondary trauma is caused to a patient; secondly, in the process of puncture, the bone is difficult to bypass, the puncture path is repeatedly adjusted, even the preset position can be reached by repeated puncture, the operation is inconvenient, and the pain of the patient is increased; thirdly, because the bone surface has certain radian, the straight puncture needle is jointed with the bone surface at the position tangent to the bone surface after entering, and gaps are arranged between other parts and the bone surface, so that the puncture needle is less in contact with the bone surface, poor in jointing and poor in treatment effect.

Therefore, a puncture needle which can adjust a puncture path in real time, puncture precisely and has good conformity with the bone surface for pain treatment is urgently needed.

Disclosure of Invention

One advantage of the present invention is to provide a painful trocar and an outer tube, which can adjust the path of puncture, smoothly slide over the bone surface during the puncture process, and are easy to operate and convenient to use.

Another advantage of the present invention is to provide a painful penetration trocar and an outer needle tube, which can be adjusted in bending angle and is suitable for use in different patients and for treating pain at different locations.

Another advantage of the present invention is to provide a trocar and an outer tube for pain puncturing, which can be attached to the bone surface to be closer to the nerve tissue during the treatment, and have a large contact area with the nerve, and a better treatment effect.

Another advantage of the present invention is to provide a painful puncturing trocar and an outer needle tube having flexibility to adjust a puncturing position, thereby requiring less operator and simplifying an operation in terms of instruments.

Another advantage of the present invention is to provide a painful trocar and an outer tube for puncturing, which can change the direction during puncturing to avoid surrounding normal tissues and bones, prevent damage to surrounding tissues at a target site, ensure accuracy of puncturing, avoid repeated puncturing, and reduce complications and pain of a patient.

Another advantage of the present invention is to provide a painful trocar and an outer tube, which can adjust the puncture path during the insertion of the needle, and allow precise puncture under the visual condition, so that the subsequent injection of drugs and other treatments are more precise, and a better treatment effect is ensured.

Another advantage of the present invention is to provide a painful trocar and outer tube, wherein the needle is blunt and rounded, and does not puncture tissue structures, and is more secure and reliable.

Another advantage of the present invention is to provide a painful puncturing trocar and an outer needle tube, in which the outer needle tube is made of a material different from that of the conventional one, so that the outer needle tube has a predetermined flexibility, and the bending angle thereof can be adjusted in real time, thereby smoothly sliding over the bone surface without causing secondary damage to the patient.

Another advantage of the present invention is to provide a painful trocar and an outer needle tube, wherein the outer needle tube is suitable for matching with an electrode to perform rf therapy on nerve tissue, and has a wide range of applications and clinical applications.

Another advantage of the present invention is to provide a painful trocar for puncturing and an outer needle tube, wherein the outer needle tube is adapted to be coupled to an inner needle core, and after the inner needle core is removed, the outer needle tube is adapted to inject a drug through a channel of the outer needle tube, so as to treat or destroy nerve tissue, thereby relieving pain.

According to one aspect of the present invention, there is provided a painful penetrating trocar comprising:

an outer needle tube, wherein the outer needle tube comprises a tube front section, the tube front section comprises a tube extension section, a tube arc section and a tube slope, wherein the tube arc section is integrally formed at the front part of the tube extension section, the tube slope is arranged at the top end of the tube arc section, the outer needle tube is provided with a working channel, the working channel is longitudinally arranged on the outer needle tube, and the outlet of the working channel is positioned on the tube slope; and

a needle inner core, the needle inner core includes a core anterior segment, the core anterior segment includes a core extension section, a core segmental arc and a core inclined plane, new segmental arc integrated into one piece in the front portion of core extension section, the core inclined plane set up in the top of core segmental arc, the needle inner core passes through working channel by detachably cup joint in inside the needle outer tube, wherein the needle inner core with needle outer tube phase-match.

Wherein the pipe segmental arc includes an arc front and an arc back, the arc front with arc back an organic whole is connected, the pipe inclined plane is located the top at the arc back, wherein the pipe inclined plane includes a pipe inclined plane top and a pipe inclined plane end, pipe inclined plane top connect in the positive top of arc, the pipe inclined plane is followed pipe inclined plane top is towards pipe inclined plane end direction extends, and in pipe inclined plane end connect in the arc back.

Wherein the needle outer tube still includes a pipe middle section and a pipe back end, the pipe middle section connect in the pipe back end with between the pipe extending section, the needle inner core still includes a core middle section and a core back end, the core middle section connect in the core back end with between the core extending section, the pipe back end with detachable connects between the core back end, with the needle inner core cup joint firmly in inside the needle outer tube.

The needle outer tube further comprises an insulating layer and a scale mark, the insulating layer is arranged on the outer side of the tube middle section and the outer side of the tube rear section, and the scale mark is arranged on the outer side of the insulating layer.

The needle outer tube further comprises a positioning mark, the positioning mark is arranged at the tail end of the tube rear section, the needle inner core further comprises a sleeve mark, the sleeve mark is arranged at the core rear section, and when the needle inner core is arranged behind the needle outer tube, the sleeve mark corresponds to the positioning mark.

Wherein the angle of the tube arc section is 10-30 degrees, the inclination angle of the tube inclined plane is 65 degrees, the lengths of the tube front section and the core front section are both 1cm, the lengths of the tube arc section and the core arc section are both 0.5cm, the lengths of the tube inclined plane and the core inclined plane are both less than or equal to 0.1cm, the angle of the core arc section is 10-15 degrees, and the inclination angle of the core inclined plane is 65 degrees.

The needle outer tube is made of iron and aluminum, has toughness and is suitable for adjusting the radian of the tube arc section of the needle outer tube through external force.

According to another aspect of the present invention, there is provided a painful penetration trocar comprising:

a needle outer tube, the needle outer tube including a tube front side and a tube back side, the tube front side and the tube back side being integrally connected to form a working channel, the working channel being longitudinally located in the middle of the needle outer tube, wherein the front end of the tube front side has a fitting surface, the front end of the tube back side has a sliding surface, the sliding surface including an arc surface and a tube slope surface, wherein the tube slope surface is disposed at the top end of the arc surface and connected to the top end of the fitting surface, the outlet of the working channel is located at the tube slope surface, wherein the sliding surface is adapted to slide along a bone surface, and the fitting surface is adapted to fit the bone surface at a treatment site; and

the needle inner core is arranged in the working channel and detachably sleeved inside the needle outer tube, and the shape and the size of the needle inner core and the shape and the size of the needle outer tube are matched.

The tube inclined plane comprises a tube inclined plane top end and a tube inclined plane tail end, the tube inclined plane top end is located at the top end of the needle outer tube in a round and moist mode, the tube inclined plane obliquely extends from the tube inclined plane top end towards the direction of the tube inclined plane tail end, and the tube inclined plane tail end is connected with the arc-shaped plane.

When the painful puncture trocar enters a human body, the binding surface faces the direction of the ossicle, when the painful puncture trocar reaches the ossicle, the top end of the tube inclined surface is in contact with the ossicle, external force is applied to rotate the outer tube of the trocar, so that the top end of the tube inclined surface is away from a contact point with the ossicle, the external force is continuously applied, the tube inclined surface and the arc-shaped surface slide while being turned over, the tube inclined surface and the arc-shaped surface move along the bone surface of the ossicle until the arc-shaped surface is tightly attached to the ossicle, and the first turning is finished; and continuously applying external force to enable the sliding surface to slide forwards along the bone surface of the ossicle to reach a treatment position, at the moment, the fitting surface deviates from the ossicle, and then applying the external force to rotate the needle outer tube to complete the second turnover, so that the fitting surface faces the ossicle to fit the bone surface of the ossicle.

Wherein the needle inner core is solid construction, including a core anterior segment, a core back end and connect in the core anterior segment with a core middle section between the core back end, wherein the core anterior segment includes a core extension section, a core segmental arc and a core inclined plane, the core extension section connect in the core segmental arc with between the core middle section, the core inclined plane set up in the top of core segmental arc, wherein the core inclined plane with pipe inclined plane phase-match, the core segmental arc with the arcwall face phase-match.

The needle outer tube further comprises a positioning mark, the positioning mark is arranged at the tail end of the front end of the tube, the needle inner core further comprises a sleeve mark, the sleeve mark is arranged at the core rear section, the needle inner core is sleeved on the needle outer tube, and the positioning mark corresponds to the sleeve mark.

Wherein the radian of the arc-shaped surface is 10-30 degrees, the inclination angle of the tube inclined surface is 65 degrees, the radian of the core arc-shaped section is 10-15 degrees, and the inclination angle of the core inclined surface is 65 degrees.

According to another aspect of the present invention, there is also provided a needle overtube comprising:

including a tub anterior segment, a tub middle section and a tub back end, tub anterior segment includes a pipe extension, a tub segmental arc and a pipe inclined plane, wherein tub middle section an organic whole connect in tub extension with between the pipe back end, tub segmental arc an organic whole connect in tub extension is anterior, the pipe inclined plane is located the top of tub segmental arc, wherein tub segmental arc includes an arc openly and an arc back, the pipe inclined plane is located the arc back.

The needle outer tube further comprises an insulating layer, a positioning mark and a scale mark, the insulating layer is arranged on the outer side of the tube middle section and the outer side of the tube rear section, the positioning mark is arranged on the tube rear section, and the scale mark is arranged on the outer side of the insulating layer.

Wherein the needle outer tube has a working channel, the working channel is longitudinally disposed at the tube front section, the tube middle section and the tube rear section, wherein an outlet of the working channel is located at the tube bevel, wherein the tube bevel comprises a tube bevel top end and a tube bevel end, the tube bevel top end is connected to a top end of the arc front face, the tube bevel extends from the tube bevel top end towards the tube bevel end direction, and is connected to the arc rear face at the tube bevel end.

The needle outer tube is made of iron and aluminum, has preset strength and toughness, and is suitable for being bent and rebounded within a certain range under the action of external force.

The angle of the arc-shaped section of the pipe is 10-30 degrees, the inclination angle of the inclined plane of the pipe is 65 degrees, the length of the front section of the pipe is 1cm, the length of the arc-shaped section of the pipe is 0.5cm, and the length of the inclined plane of the pipe is less than or equal to 0.1cm.

According to another aspect of the present invention, there is also provided a needle cannula comprising a cannula front side and a cannula back side, the cannula front side and the cannula back side being integrally connected to form a working channel, the working channel being located longitudinally in the middle of the needle cannula, wherein the front end of the cannula front side has an abutment surface, the front end of the cannula back side has a sliding surface, the sliding surface comprising an arcuate surface and a cannula ramp surface, wherein the cannula ramp surface is disposed at the top end of the arcuate surface and is connected to the top end of the abutment surface, the outlet of the working channel being located at the cannula ramp surface, wherein the sliding surface is adapted to slide along a bone surface, and the abutment surface is adapted to abut the bone surface in a treatment position.

The top end of the tube inclined plane is rounded and is positioned at the top end of the needle outer tube, the tube inclined plane obliquely extends from the top end of the tube inclined plane to the direction of the tail end of the tube inclined plane and is connected with the arc-shaped plane at the tail end of the tube inclined plane, when the pain puncture trocar enters a human body, the binding surface faces the direction of the ossicle, when the pain puncture trocar reaches the ossicle, the top end of the tube inclined plane is contacted with the ossicle, external force is applied to rotate the needle outer tube, so that the top end of the tube inclined plane leaves a contact point with the ossicle, the external force is continuously applied, the tube inclined plane and the arc-shaped plane slide while being overturned, the tube inclined plane and the arc-shaped plane move along the bone surface of the ossicle until the arc-shaped plane is tightly attached to the ossicle, and the first overturning is completed; and continuously applying external force to enable the sliding surface to slide forwards along the bone surface of the ossicle to reach a treatment position, at the moment, the fitting surface deviates from the ossicle, and then applying the external force to rotate the needle outer tube to complete the second turnover, so that the fitting surface faces the ossicle to fit the bone surface of the ossicle.

Drawings

FIG. 1 is a schematic view of a painful penetrating trocar according to a preferred embodiment of the present invention.

Fig. 2A is a partial structural view of the needle outer tube of the pain puncturing trocar according to the above preferred embodiment of the present invention.

Fig. 2B is a partial structural view of another perspective of the needle outer tube of the painful penetration trocar according to the above preferred embodiment of the present invention.

Fig. 3 is a partial structural view of the needle outer tube of the pain-piercing trocar according to the above preferred embodiment of the present invention.

Fig. 4 is a schematic view showing the angle change of the needle outer tube according to the above preferred embodiment of the present invention.

Fig. 5 is a partial structural view of the needle core of the pain piercing trocar according to the preferred embodiment of the present invention.

Fig. 6 is a schematic view showing a puncturing process of the pain puncturing trocar according to the above preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1-6, a painful penetrating trocar according to a preferred embodiment of the present invention is illustrated. In the present invention, the nociceptive puncture trocar includes a needle outer tube 10 and a needle inner core 20, the needle inner core 20 is a solid structure, the needle outer tube 10 has a working channel 100, wherein the needle inner core 20 is installed inside the working channel 100, such that the needle inner core 20 is detachably sleeved inside the needle outer tube 10.

The painful puncture trocar can finely adjust and change a puncture path, has relatively low technical requirements on doctors, can be changed conveniently and smoothly to slide across the bone surface in the puncture and needle insertion process, prevents other organs or tissues from being punctured, avoids secondary trauma to patients, and reduces complications. In the work, painful puncture trocar can be inseparable with the fad bone laminating, and neural more area of contact that has, no matter the radio frequency of later stage still fills the liquid medicine and can both contact more nerve, reaches better treatment.

In this embodiment, the direction of the pain puncturing trocar entering the human body is defined as the front, and the hand-held portion is defined as the rear, so as to facilitate the description.

The needle outer tube 10 includes a tube front section 11, a tube middle section 12 and a tube rear section 13, wherein the tube middle section 12 is connected between the tube front section 11 and the tube rear section 13. When the human body needs to enter, the rear tube section 13 is held by a hand, so that the front tube section 13 is in contact with the human body in advance and then drives the middle tube section 12 to move towards the direction of the human body, and a preset position is reached.

The needle outer tube 10 further comprises an insulating layer 14, the insulating layer 14 being disposed outside the middle tube section 12 to isolate electrical current from the interior of the middle tube section 12. The tube front section 11 is a conductive section exposed at the front ends of the insulating layer 14 and the tube middle section 12, and the tube front section 11 and the tube middle section 12 are suitable for being manufactured in an integrated manner.

The pipe front segment 11 comprises a pipe extension segment 111, a pipe arc segment 112 and a pipe inclined plane 113, wherein the pipe extension segment 111 is integrally formed on the pipe middle segment 12 and between the pipe arc segments 112, the pipe inclined plane 113 is arranged at the front end of the pipe arc segment 112, so that the front end of the pipe arc segment 112 is inclined.

The tube bevel 113 has a tube bevel tip 1131 and a tube bevel tip 1132, wherein the tube bevel tip 1132 extends from the tube bevel tip 1131 in a direction toward the tube arc 112, and the tube bevel tip 1311 is a rounded structure. That is, the tube slope 113 is blunt and not sharp, so that the front end of the outer needle tube 10 has a blunt structure to prevent other organs from being punctured when inserting the needle.

The tube segment 112 includes an arcuate front surface 1121 and an arcuate back surface 1122 that are integrally formed, and the arcuate front surface 1121 and the arcuate back surface 1122 are integrally formed to form the front and back surfaces of the tube segment 112. Wherein the tube bevel 113 extends from a top end of the arcuate front surface 1121 to a top end of the arcuate back surface 1122. That is, the tube bevel tip 1131 is located at the top of the arc front surface 1121, and the tube bevel tip 1132 is located at the top of the arc back surface 1132. Thus, the plane of the top end of the curved back surface 1122 is located forward of the plane of the top end of the curved front surface 1121.

In other words, when the side of the arc-shaped back surface 1122 is the back surface of the pain puncturing trocar and the side of the arc-shaped front surface 1121 is the front surface of the pain puncturing trocar, the tube inclined surface 113 is located at the back surface of the pain puncturing trocar.

The needle outer tube 10 further comprises a positioning mark 15, the positioning mark 15 is arranged on the surface of the tube rear section 13, so that the front and the back of the pain puncture trocar can be identified through the positioning mark 15, and after the pain puncture trocar enters a human body, the front and the back of the pain puncture trocar can be clearly distinguished, so that a puncture path can be conveniently and finely adjusted, and a better puncture and treatment effect can be achieved. Wherein the positioning mark 15 can be implemented as a protrusion, a groove, a score line or a mark with different colors, etc., so that the operator can see the bending direction of the painful puncture trocar.

Preferably, the positioning mark 15 is disposed on the front surface of the painful penetrating trocar, and the bending direction of the tube arc-shaped section 112 is consistent, that is, the positioning mark 15 is on the same side as the arc-shaped front surface 1121. After the painful trocar for puncturing enters a human body, the orientation of the arc-shaped front surface 1121 can be recognized by seeing the positioning mark 15 from the outside of the body, so that the bending direction of the painful trocar for puncturing can be judged.

The working channel 100 can be used for installing the needle inner core 20, after the needle inner core 20 is taken out, the working channel 100 can also be used as a medicine injection channel, medicines for treating or destroying nerves and the like are injected through the working channel 100, and a radio frequency electrode can be installed through the working channel 100 for radio frequency treatment of pain.

The needle inner core 20 is a solid structure, wherein the shape of the needle inner core 20 is the same as that of the needle outer tube 10, and the bending direction and the bending angle of the front end are consistent. The method comprises the following specific steps:

the needle inner core 20 comprises a core front section 21, a core middle section 22 and a core rear section 23, wherein the core middle section 22 is connected between the core front section 21 and the core rear section 23. After the needle inner core 20 is installed in the working channel 100 of the needle outer tube 10, the core rear section 23 is connected to the tube rear section 13, so that the needle outer tube 10 and the needle inner core 20 can be fixed and can be operated by hand.

The core front segment 21 includes a core extension segment 211, a core arc segment 212 and a core slope 213, wherein the core arc segment 212 is integrally formed at the front of the core extension segment 211, and the core slope 213 is disposed at the top end of the core arc segment 212 and is inclined toward the core extension segment 211. Wherein the core ramp 213 is shaped and sized to match the tube ramp 113 and the core arc segment 212 is shaped and sized to match the tube arc segment 112. When the needle inner core 20 is sleeved inside the needle outer tube 10, the core front section 21 is matched with the tube front section 11 so as to enter the human body.

The needle inner core 20 comprises a sleeve mark 25, the sleeve mark 25 is arranged on the core back section 23 to position the cannula position of the needle inner core 20, and when the sleeve mark 25 and the positioning mark 15 are in a straight line or are overlapped, the needle inner core 20 is correctly sleeved inside the needle outer tube 10. At this time, the core arc segment 212 is matched with the tube arc segment 112, and the core inclined plane 213 is aligned with the tube inclined plane 113, that is, the core arc segment and the tube inclined plane can be jointed, so that the bending direction and the angle of the needle inner core 20 and the needle outer tube 10 are consistent.

After the needle inner core 20 is installed inside the needle outer tube 10, the needle inner core 20 detachably fills the working channel 100, so that in the process of inserting the needle after the needle inner core 20 is sleeved with the needle inner core, muscle, blood and the like can be effectively prevented from entering the working channel 100, and the medicine can be more conveniently inserted and the radio-frequency electrode can be installed after the needle inner core 20 is drawn out.

When the needle outer tube 10 is turned in a human body or an external force is applied to change the bending angle of the needle outer tube 10, the needle inner core 20 needs to be pulled out, and when reinsertion occurs, the situation that the needle inner core and the needle outer tube cannot be bent and aligned may occur, and through the matching between the positioning mark 15 and the cannula mark 25, the position relationship between the needle outer tube 10 and the needle inner core 20 can be accurately seen from the outside of the body, so that the needle inner core 20 and the needle outer tube 10 are aligned, and the needle inner core 20 and the needle outer tube 10 can be accurately sleeved to puncture the human body.

It should be noted that the needle outer tube 10 further has a scale mark 16, and the scale mark 16 is disposed outside the insulating layer 14 to visually see the length of the painful trocar that enters the human body, and to more accurately determine the puncture position and perform appropriate adjustment.

The pain puncture needle can be applied to treatment of lumbar vertebra centrum pain, treatment of thoracic vertebra rib pain, trigeminal neuralgia and the like, puncture under the guide of perspective or B-ultrasonic, and is attached to a bone surface after sliding across the bone surface to contact with a small bone in a larger area.

The needle inner core 20 is made of stainless steel and is hard, but the needle outer tube 10 is soft compared with the needle inner core 20, and the bending degree of the needle outer tube 10 can be changed by applying an external force to the needle outer tube 10. That is, the needle outer tube 10 is a flexible outer tube, and the bending angle can be properly changed within a predetermined range by pressing, so as to adapt to the treatment of different pain parts of a patient or adapt to different people.

That is to say, the sizes of bones at different parts of a body or the same bone of different people are different, the radians of the bone surfaces are different, and the conventional upright pain puncture treatment needle or the pain puncture treatment needle with fixed bending angle cannot adapt to the change of different bones, so that the sticking is not tight or the sticking surface is less, and a better treatment effect cannot be achieved.

The painful puncture trocar punctures under the guide of perspective or B ultrasonic, and the puncture needle inserting process is shown by referring to the attached figure 6. The needle insertion path is defined as S, and the position on the left side of the needle insertion path S is defined as a left side surface S1, and the position on the right side of the needle insertion path S is defined as a right side surface S2, wherein the ossicle G to be treated is located on the right side surface S2. Defining three positions and treatment positions which pass through in the needle inserting process, namely four positions located on the needle inserting path S, namely a first position A, a second position B, a third position C and a fourth position D, wherein the first position A is an initial needle inserting position, the second position B is a position where the needle outer tube 10 is initially contacted with a bone surface, the third position C is a position after first overturning, and the fourth position D is a preset treatment position and is also a position after second overturning.

Specifically, when the pain puncturing trocar is located at the first position a, in order to avoid damaging other tissue organs, the trocar is inserted such that the arc front surface 1121 faces the direction of the ossicle G, i.e., the right side surface S2, and the tube inclined surface 113 faces the opposite direction of the ossicle G, i.e., the left side surface S1, and at this time, the positioning mark 15 faces the right side surface S2.

When the second position B is reached, the tube bevel tip 1131 will abut against the ossicle G and contact the ossicle G, and cannot be further advanced, which may puncture the ossicle if forced to advance. Thus, it is now necessary to rotate the tube rear section 13 by applying force to invert the pain piercing trocar so that the tube beveled tip 1131 gradually moves away from the ossicle G and no longer contacts the ossicle B site.

In the above-mentioned turning process, the outer needle tube 10 is turned over while the outer needle tube 10 is made to slide forward, i.e. after being turned slightly, when the tube bevel tip 1131 is no longer in contact with the ossicle, the outer needle tube 10 can slide forward while being turned over, so as to reach the third position C. That is, the needle outer tube 10 is turned over and slides along the bone surface of the ossicle G between the second position B and the third position C until the needle outer tube 10 is completely turned over when sliding to the third position C, that is, the first turning is completed.

In this process, the top end of the tube inclined plane 113 and the arc-shaped back plane 1122 form a sliding plane, which slides along the ossicle G, so that the tube front section 11 advances from the left side surface S1 of the ossicle G around the ossicle G, preventing from puncturing the ossicle or other organ tissues, and thus smoothly sliding across the bone surface of the ossicle G.

It should be noted that when the needle is turned over at the position B, the needle slides while turning over, that is, while turning over the needle anterior segment 11, the tube inclined surface 113 and the arc-shaped back surface 1122 slide along the bone surface of the ossicle G. That is, the tube slope 113 at the front end slides first during the turning, and then slides slightly forward when the tube slope top end 1131 turns away from the contact point with the ossicle G, and at this time, the arc-shaped back surface 1122 slides forward along the bone surface of the ossicle G until the maximum convex surface of the arc-shaped back surface 1122 reaches the third position C and is attached to the ossicle G.

In the third position C, after the pain-piercing trocar is turned for the first time, the arc front surface 1121 faces the left side surface S1, the arc back surface 1122 faces the right side surface S2, and the tube inclined surface 113 faces the right side surface S2, i.e., the arc back surface 1122 and the tube inclined surface 113 face the direction of the ossicle G. In this orientation, the external force continues to be applied to the rear tube section 13, so that the outer needle tube 10 continues to slide forward. That is, the tube slope 113 and the arc-shaped back 1122 form a sliding surface that continues to slide along the bone surface of the ossicle G between the third position C and the fourth position D until the fourth position D is reached.

It is worth mentioning that, in the process of sliding forward from the third position C to the fourth position D, since the tube inclined surface 113 always faces the right side surface S2, other tissue organs and the like near the ossicle can be prevented from being punctured, and the sliding surface formed by the tube inclined surface 113 and the arc-shaped back surface 1122 can make the sliding and the forward movement smoother.

When the fourth position D is reached, the external force is continuously applied to the tube rear section 13, and the needle outer tube 10 is turned over again, so that the tube inclined surface 113 and the arc-shaped back surface 1122 face the left side surface S1, and the arc-shaped front surface 1121 faces the right side surface S2, i.e., the direction toward the ossicle G, at this time, a second turning is completed. After complete inversion, the tube segment 112 is made to conform to the facet of the ossicle G. That is, from the tube bevel tip 1131 to the tip of the tube extension 111, the tube extension completely fits the bone surface of the ossicle G, fits tightly, and has a larger contact surface with the ossicle.

In the treatment process, the arc front surface 1121 is always kept to be tightly attached to the bone surface, so that a large contact area with nerves is achieved, and the tube extension section 111 is close to the ossicle, so that a certain effect can be still played in the treatment process. In traditional straight puncture needle treatment process, only part is tangent with the bone surface, has great gap between other positions and the bone surface, and the contact surface is less, and the puncture trocar of the crooked type in this embodiment, the parcel is in the outside of ossicle, closely laminates with the bone surface, does not have the gap between the two, and then makes the contact surface great, can reach better treatment.

It should be noted that, in the present invention, the length L1 of the conductive tube front section 11 is 1cm, the length L2 of the tube arc section 112 is 0.5cm, and the length L3 from the tube bevel tip 1131 to the tube bevel end 1132 is not more than 1mm. The tube arc section 112 and the tube extension section 111 form a predetermined angle α, wherein α is in the range of 10 ° to 15 °, and the tube slope 113 is inclined at an angle β of 65 °.

It will be understood by those skilled in the art that the angles and the corresponding lengths of the needle outer tube 10 and the needle inner core 20 are embodied as the above-listed values, but are not limited thereto, and may be slightly changed according to actual use without departing from the concept of the present invention.

Similarly, the needle inner core 20 is matched with the needle outer tube 10, so that the needle inner core 20 can be detachably mounted in the working channel 100, and meanwhile, the passing channel 100 can be filled in the needle insertion process, and the influence on the needle insertion and the safety of a patient due to the fact that a gap sucks meat and the like in the needle insertion process is prevented.

Specifically, the core back section 23 is matched with the tube back section 13, and the needle inner core 20 is detachably connected with the needle outer tube 10 through the matching connection between the core back section 23 and the tube back section 13. The length and size of the core middle section 22 and the pipe middle section 12 are matched, and the length, shape and size of the core front section 21 and the pipe front section 11 are matched.

The core extension section 211 is matched with the tube extension section 111, the length of the core extension section is 1cm, the core arc section 212 is matched with the tube arc section 112, the length of the core extension section is 0.5cm, the radian of the core extension section is 10-15 degrees, the bending angle of the core arc section 212 is not adjustable, the bending angle of the tube arc section 112 is suitable for being adjusted through external force, after adjustment, the bending angle of the tube arc section 112 is 10-30 degrees, the lengths of the tube inclined plane 113 and the core inclined plane 213 are both less than or equal to 0.1cm, and the inclination angles are 65 degrees.

Due to the matching between the needle inner core 20 and the needle outer tube 10, the needle inner core 20 and the needle outer tube 10 can be smoothly punctured and enter a human body after being connected, after reaching a preset position, the needle inner core 20 is drawn out, the needle outer tube 10 is left to perform the next operation, for example, the needle outer tube 10 is filled with medicines and the like through the working channel 100, or a radio frequency needle is installed, and then radio frequency treatment is performed through the conductive tube front section 11.

Preferably, the needle outer tube 10 is made of iron and aluminum, so that it has toughness while satisfying strength requirements, and the bending angle can be adjusted appropriately by pressing, so as to fine-tune the insertion path and adapt to different bone surfaces and different people.

Referring to fig. 4, under normal conditions, the actual radian α of the front tube section 11 is 10 ° to 15 °, the range of the needle outer tube 10 is adjusted to 10 ° to 30 ° by pressing, and the original radian of 10 ° to 15 ° can be restored by applying external force, that is, the needle outer tube 10 has a certain deformation, so as to meet more requirements.

Because different patients have different fat and size and different bone sizes, during the needle insertion process, if the needle insertion path is found to have some deviation under the visual condition, at the moment, the bending degree of the needle outer tube 10 can be changed by applying external force through the harder needle inner core 20 so as to adjust the deviation, thereby completing the needle insertion process. The puncture needle does not need to be pulled out for puncture, can be slightly adjusted in the puncture process, relieves the pain of a patient, and simultaneously has relatively low requirements on the operation level of a doctor and relatively simple operation from the aspect of instruments.

When sliding over the bone surface, if it is found that there is a slight deviation due to a difference of bones or a puncture position, the bending degree can be changed by applying an external force to the needle outer tube 10 to smoothly slide over the bone surface without stabbing surrounding tissues and organs.

In addition, when the preset position is reached, under the visual condition, when a gap is found between the arc front surface 1121 and the bone surface, the radian of the arc front surface 1121 and the bone surface can be changed by applying an external force to the needle outer tube 10, so that the bone surface can be better attached, the difference between different patients and bones at different positions can be adapted, a better treatment effect can be achieved under the condition that repeated puncture and needle replacement are not needed, meanwhile, more complications are not generated, and the success rate of the operation can be ensured.

It is worth mentioning that the needle external tube 10 has a tube front 1101 and a tube back 1102, and the tube front 1101 and the tube back 1102 are integrally connected to form the working channel 100. The front end of the front tube face 1101 comprises an abutting face 1103, the front end of the back tube face 1102 comprises a sliding face 1104, and the sliding face 1104 and the abutting face 1103 are integrally connected. The sliding surface 1104 comprises the inclined tube surface 113 and an arc surface 1105, wherein the inclined tube surface 113 is disposed at the top end of the arc surface 1105, and the top end of the inclined tube surface 113 is connected to the top end of the abutting surface 1103.

The tube front 1101 is formed by a front of the tube front section 11, a front of the tube middle section 12, and a front of the tube rear section 13, and the tube back 1102 is formed by a back of the tube front section 11, a back of the tube middle section 12, and a back of the tube rear section 13. The portion of the back side of the front tube section 11, i.e., the back side of the tube segment 112 and the tube ramp 113, forms the sliding surface 1104, and the portion of the front side of the front tube section 11, i.e., the front side of the tube segment 112, forms the abutting surface 1103.

Specifically, the tube slope 113 includes the tube slope top end 1131 and the tube slope end 1132, the tube slope top end 1131 is located at the foremost end of the needle front section 11, and the tube slope top end 1131 is connected with the top end of the fitting surface 1103 in an integrally formed manner, and is blunt and round.

The tube ramp 1131 extends obliquely from the tube ramp top end 1131 toward the tube ramp end 1132, and is connected to the arcuate surface 1105 at the tube ramp end 1132. Thus, one side of the tube inclined surface 113 is the outlet of the working channel 100, and the other side of the tube inclined surface 113 is the abutting surface 1103 or the arc front surface 1121. Therefore, the tube inclined surface 113 has an inclined flat shape, and the tube arc-shaped section 112, the tube extension section 111, and the tube rear section 112 are all cylindrical, i.e., the thickness of the tube inclined surface 113 is smaller than the thickness of the tube arc-shaped section 112 and the tube extension section 111.

The working channel 100 penetrates the tube front section 11, the tube middle section 12 and the tube rear section 13, so that the working channel 100 is a longitudinally cylindrical channel, the cross section of the working channel 100 is circular, and the outlet of the working channel 100 is located on the tube inclined surface 113, so that the outlet of the working channel 100 is oval, and is inclined along with the inclination of the tube inclined surface 113, namely, is inclined.

During application, the sliding surface 1104 is adapted to slide along the bone surface so that the tip of the anterior tube segment 11, i.e., the tube bevel tip 1131, does not stick to the ossicle or other surrounding tissue organs, and when slid to a predetermined position, the abutment surface 1103 abuts the bone surface of the ossicle. In this embodiment, during the sliding process, not only the arc-shaped surface 1105 can slide across the bone surface, but also the tube inclined surface 113 can slide across the bone surface. In the process of fitting treatment, compared with a traditional puncture needle, the fitting surface 1103 is fitted with a bone surface or is close to the bone surface, so that the bone surface of a ossicle surrounded by the puncture needle is more, and the more fitting, the better the treatment effect is, therefore, the pain puncture trocar can achieve a better treatment effect.

Specifically, during the needle insertion and treatment, in the first position a, the abutting surface 1103 faces the right side surface S2, the sliding surface 1104, and the arc-shaped surface 1105 and the tube inclined surface 113 face the left side surface S1; when the second position B is reached, the tube inclined plane top end 1131 contacts with the ossicle, and cannot advance continuously at this time, and needs to be turned over for the first time, the needle outer tube 10 is rotated, when the tube inclined plane top end 1131 is separated from the ossicle G, is no longer in contact with the ossicle G, and gradually gets away from the ossicle G, the needle outer tube slides while turning continuously, so that the tube inclined plane 113 drives the arc-shaped plane 1105 to slide, and when the needle outer tube slides to the third position C through the sliding plane 104, the first turning is completed, at this time, the fitting plane 1103 faces the left side surface S1, the arc-shaped plane 1105 faces the right side surface S2, and the arc-shaped plane 1105 is tightly fitted to the bone surface of the ossicle G, or the two are tangent to each other; then, continuously applying external force to enable the arc-shaped surface 1105 to cling to the bone surface to continuously slide and advance until the fourth position D is reached, and then turning over for the second time; after the second turn, the attaching surface 1103 faces the right side surface S2 and attaches to the facet of the ossicle, and the arc-shaped surface 1105 and the tube slope 113 face the left side surface S1, so as to maintain the orientations for the next treatment operation.

In the present invention, the positioning mark 15 is disposed at the end of the front tube 1101, and the insulating layer 14 and the scale mark 16 are disposed at the rear end of the front tube 1101 and the rear tube 1102, so as to keep the front tube 11 exposed, for facilitating the rf treatment after installing the rf needle. That is, the tube front section 11 is ensured to be in a conductive state, and in order to prevent other tissues and organs from being damaged, the tube middle section 12 and the tube rear section 13 are in an insulating state under the wrapping of the insulating layer 14.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (15)

1. A painful penetrating trocar, comprising:

an outer needle tube, wherein the outer needle tube comprises a tube front section, the tube front section comprises a tube extension section, a tube arc section and a tube slope, wherein the tube arc section is integrally formed at the front part of the tube extension section, the tube slope is arranged at the top end of the tube arc section, the outer needle tube is provided with a working channel, the working channel is longitudinally arranged on the outer needle tube, and the outlet of the working channel is positioned on the tube slope; and

a needle inner core, the needle inner core includes a core anterior segment, the core anterior segment includes a core extension section, a core segmental arc and a core inclined plane, core segmental arc integrated into one piece in the front portion of core extension section, the core inclined plane set up in the top of core segmental arc, the needle inner core passes through working channel by detachably cup joint in inside the needle outer tube, wherein the needle inner core with needle outer tube phase-match.

2. The pain penetrating trocar of claim 1, wherein the tube arcuate segment includes an arcuate front face and an arcuate back face integrally connected together, the tube bevel being located at a top end of the arcuate back face, wherein the tube bevel includes a tube bevel top end and a tube bevel tip, the tube bevel top end being connected to a top end of the arcuate front face, the tube bevel extending obliquely from the tube bevel top end toward the tube bevel tip end and being connected to the arcuate back face at the tube bevel tip end.

3. The nociceptive puncture trocar of claim 2, wherein the needle outer tube further comprises a middle tube section and a rear tube section, the middle tube section is connected between the rear tube section and the extension tube section, the needle inner core further comprises a middle core section and a rear core section, the middle core section is connected between the rear core section and the extension core section, and the rear tube section and the rear core section are detachably connected to securely sleeve the needle inner core inside the needle outer tube, wherein the needle outer tube further comprises an insulating layer and a scale mark, the insulating layer is disposed on an outer side of the middle tube section, and the scale mark is disposed on an outer side of the insulating layer.

4. The nociceptive puncture trocar of claim 3, wherein the needle outer tube further comprises a locating mark disposed at a distal end of the tube rear section, the needle inner core further comprises a cannula mark disposed at the core rear section, the cannula mark corresponding to the locating mark when the needle inner core is mounted to the needle outer tube.

5. The nociceptive puncture trocar of any one of claims 1 to 4, wherein the arc of the tube arc is 10 ° -15 °, the angle of inclination of the tube slope is 65 °, the length of the tube front section is 1cm, the length of the tube arc is 0.5cm, and the length of the tube slope is no greater than 0.1cm.

6. The painful penetrating trocar of claim 5, wherein the arc of the core arc segment is 10 ° -15 °, the angle of inclination of the core bevel is 65 °, the length of the core front segment is 1cm, the length of the core arc segment is 0.5cm, and the length of the core bevel is no more than 0.1cm.

7. The nociceptive puncture trocar of claim 6, wherein the needle outer tube is made of iron and aluminum, and has a flexibility adapted to adjust an arc of the tube arc of the needle outer tube by an external force.

8. A painful penetrating trocar, comprising:

a needle outer tube, the needle outer tube comprising a tube front side and a tube back side, the tube front side and the tube back side being integrally connected to form a working channel, the working channel being longitudinally located in the middle of the needle outer tube, wherein the front end of the tube front side has an abutment surface, the front end of the tube back side has a sliding surface, the sliding surface comprising an arcuate surface and a tube slope, wherein the tube slope is disposed at the top end of the arcuate surface and connected to the top end of the abutment surface, the outlet of the working channel being located at the tube slope, wherein the sliding surface is adapted to slide along a bone surface, and the abutment surface is adapted to abut the bone surface at a treatment site; and

the needle inner core is arranged in the working channel and detachably sleeved inside the needle outer tube, and the shape and the size of the needle inner core and the shape and the size of the needle outer tube are matched.

9. The nociceptive puncture trocar of claim 8, wherein the tube bevel includes a tube bevel tip and a tube bevel tip, the tube bevel tip being rounded and located at a tip of the needle outer tube, the tube bevel extending obliquely from the tube bevel tip in a direction toward the tube bevel tip and being connected to the arcuate surface at the tube bevel tip.

10. The nociceptive puncture trocar of claim 9, wherein the abutting surface faces the direction of the ossicle when the nociceptive puncture trocar enters the human body, the top end of the tube inclined surface contacts the ossicle when reaching the ossicle, external force is applied to rotate the outer needle tube, so that the top end of the tube inclined surface is away from the contact point with the ossicle, the external force is continuously applied, and the tube inclined surface and the arc-shaped surface move along the bone surface of the ossicle while overturning and sliding until the arc-shaped surface abuts against the ossicle, and the first overturning is completed; and continuously applying external force to enable the sliding surface to slide forwards along the bone surface of the ossicle to reach a treatment position, at the moment, the fitting surface deviates from the ossicle, and then applying the external force to rotate the needle outer tube to complete the second turnover, so that the fitting surface faces the ossicle to fit the bone surface of the ossicle.

11. The nociceptive puncture trocar of any one of claims 8 to 10, wherein the arc of the arcuate surface is 10 ° -15 °, and the angle of inclination of the tube bevel is 65 °.

12. The nociceptive puncture trocar of claim 11, wherein the outer needle tube further comprises a positioning mark disposed at a distal end of the front tube face, the inner needle core further comprises a cannula mark disposed at the core rear section, the inner needle core is sleeved on the outer needle tube, and the positioning mark corresponds to the cannula mark.

13. The nociceptive trocar of claim 12, wherein the needle inner core is a solid structure comprising a core front section, a core back section, and a core middle section connected between the core front section and the core back section, wherein the core front section comprises a core extension section, a core arc section, and a core bevel, the core extension section is connected between the core arc section and the core middle section, the core bevel is disposed at a top end of the core arc section, wherein the core bevel matches the tube bevel, the core arc section matches the bevel, wherein the core arc section has a curvature of 10 ° -15 °, and the bevel has a slope angle of 65 °.

14. An outer needle tube, its characterized in that, including a tub anterior segment, a tub middle section and a tub of back end, tub anterior segment includes a tub of extension, a tub segmental arc and a pipe inclined plane, wherein tub middle section an organic whole connect in tub extension with between the tub back end, tub segmental arc an organic whole connect in tub front portion of extension, the pipe inclined plane is located tub segmental arc's top, wherein tub segmental arc includes an arc openly and an arc back, tub inclined plane is located the arc back.

15. A needle outer tube, its characterized in that, the needle outer tube includes a pipe openly and a tub back, the pipe openly with form a working channel behind a tub back body coupling, working channel vertically is located the middle part of needle outer tube, wherein the positive front end of pipe has a binding face, the front end at the pipe back has a sliding surface, sliding surface includes an arcwall face and a pipe inclined plane, wherein the pipe inclined plane set up in the top of arcwall face, and with the top of binding face is connected, working channel's export is located the pipe inclined plane, wherein sliding surface is suitable for along the bone surface and slides, binding face is suitable for in treatment position binding bone surface.

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