CN211749758U

CN211749758U - Shovel needle and medical needle group

Info

Publication number: CN211749758U
Application number: CN201922446426.0U
Authority: CN
Inventors: 柳河
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-27
Anticipated expiration: 2029-12-30

Abstract

The utility model is suitable for a medical apparatus field provides a shovel needle and medical needle group. The shovel needle is used for cutting tissues and minimally invasive stripping and is provided with a cylindrical operation section, the operation section is provided with a first cylinder end and a second cylinder end which are arranged oppositely, and the shovel needle is provided with a blade structure capable of cutting the tissues at the first cylinder end; the inner cylinder diameter of the operation section is arranged in a tapered manner from the first cylinder end to the second cylinder end. The utility model provides a shovel needle can realize that the tissue is surely got the function and the wicresoft is peeled off, simplifies the structure and is convenient for operate.

Description

Shovel needle and medical needle group

Technical Field

The utility model belongs to the field of medical equipment, especially, relate to a shovel needle and medical needle group.

Background

The existing tissue cutter has a cutting bit to cut tissue and an accommodating mechanism to place the cut tissue and bring the tissue out of the body. The operation and structure are very complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a shovel needle and medical needle group, it aims at realizing simplifying the structure when tissue is surely got and the wicresoft is peeled off.

The utility model discloses a realize like this:

a shovel needle is used for cutting tissues and minimally invasive stripping and is provided with a cylindrical operation section, wherein the operation section is provided with a first cylinder end and a second cylinder end which are arranged oppositely, and the shovel needle is provided with a blade structure capable of cutting the tissues at the first cylinder end;

the inner cylinder diameter of the operation section is arranged in a tapered manner from the first cylinder end to the second cylinder end.

Furthermore, the cross section of the operation section is in a split ring shape.

Further, the blade structure is a raised head, a concave head or a flat head, wherein the blade structure is arc-shaped, the center of the blade structure is flush with the two ends and is the flat head, the center of the blade structure is raised relative to the two ends and is the raised head, and the center of the blade structure is recessed relative to the two ends and is the concave head.

Furthermore, the tissue cutting needle further comprises an extension section connected with the operation section, and the extension section is arranged in a cylindrical shape.

A medical needle set comprising:

the shovel needle is the shovel needle;

the round needle is of a solid rod structure, is in sleeve fit with the shovel needle, and is used for inserting tissues to position the cutting position of the shovel needle.

Furthermore, the shape of the needle head of the round needle is a pointed end, a round head or a flat head.

A medical needle set comprising:

the shovel needle is the shovel needle;

the circular needle is of a cylindrical structure and is sleeved with the shovel needle, and the needle head of the circular needle protrudes out of the shovel needle.

Furthermore, the medical needle set further comprises an inner needle, the inner needle can be sleeved with the round needle, the needle head of the inner needle protrudes out of the round needle, and the inner needle is of a cylindrical structure or a solid structure.

Further, the shovel needle is still including connecting the shovel needle file of extension section, the round needle includes the round needle body and connects the round needle file of round needle body, interior needle includes interior needle body and fixes the interior needle file of interior needle body, the round needle body is pegged graft the shovel needle, interior needle body is pegged graft the round needle body, the confession has been seted up to the shovel needle file the round needle jack that the round needle seat was inserted, the confession has been seted up to the round needle file the interior needle jack that the needle seat was inserted.

Furthermore, the medical needle set further comprises a fixed cover detachably connected with the shovel needle seat, and the fixed cover and the shovel needle seat are enclosed to fix the circular needle seat and the inner needle seat.

The utility model provides a shovel needle can realize that the tissue is surely got and the wicresoft peels off the function, simplifies the structure and is convenient for operate.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a blade needle according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of a blade needle according to an embodiment of the present invention;

FIG. 3 is a schematic view of a round needle according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the medical needle set according to the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 4 at A;

FIG. 6 is a schematic view of the connection between the spade needle and the round needle according to the embodiment of the present invention;

FIG. 7 is another schematic view of the shovel needle and the round needle according to the embodiment of the present invention;

FIG. 8 is a schematic view of another embodiment of the present invention showing the connection between the blade needle and the round needle;

FIG. 9 is a schematic view of the connection of the spade needle, round needle and inner needle according to the embodiment of the present invention;

fig. 10 is another connection diagram of the shovel needle, the round needle and the inner needle according to the embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Shovel needle	30	Inner needle
11	Working section	40	Fixing cover
				12	Blade structure	41	First blind hole
13	Extension section	42	Second blind hole
				14	Needle-shovelling seat	50	Syringe with a needle
20	Round needle
				21	Round pin body
22	Round needle seat

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

It should be further noted that, in the embodiment of the present invention, the XYZ rectangular coordinate system established in fig. 1 is defined: one side in the positive direction of the X axis is defined as the front, and one side in the negative direction of the X axis is defined as the back; one side in the positive Y-axis direction is defined as the left side, and one side in the negative Y-axis direction is defined as the right side; the side in the positive direction of the Z axis is defined as the upper side, and the side in the negative direction of the Z axis is defined as the lower side.

It should be noted that the terms of left, right, upper and lower directions in the embodiments of the present invention are only relative concepts or are referred to the normal use state of the product, and should not be considered as limiting.

Referring to fig. 1 to 10, the present embodiment provides a medical combination needle, which includes a shovel needle 10, a round needle 20, and an inner needle 30, which are independently disposed. Wherein, the shovel needle 10, the round needle 20 and the inner needle 30 can be used independently and cooperatively. To fulfill various operational needs.

Each medical needle will be specifically described below.

Referring to fig. 1 and 2, a needle 10 is used for cutting tissue, the needle 10 has an operation section 11 disposed in a cylindrical shape, the operation section 11 has a first cylindrical end and a second cylindrical end disposed oppositely, and the needle 10 is provided with a blade structure 12 at the first cylindrical end for cutting tissue;

the inner cylinder diameter of the working section 11 is arranged in a tapered manner from the first cylinder end to the second cylinder end.

It should be noted that the working section 11 is disposed in a cylindrical shape, and the inner diameter of the inner cylinder is tapered from the first cylinder end to the second cylinder end, so that the wall thickness can be reduced without changing the outer diameter of the cylinder structure, or the inner and outer diameters can be reduced while the wall thicknesses are consistent.

When in use, the blade structure 12 is downward to penetrate into the tissue to strip the tissue, and the hollow inner cylinder arranged in the operation section 11 is provided with a tapered inner cylinder, so that the tissue in the operation section 11 is pressed by the cylinder wall to be clamped on the inner cylinder along with the penetration of the shovel needle 10, and is taken away from the original tissue when the shovel needle 10 moves upward. It should be noted that, due to the reduction of the inner cylinder diameter, when the shovel needle 10 penetrates into the tissue, the tissue in the cylinder moves upward relative to the shovel needle 10 and is pressed again and again under the limitation of the cylinder diameter, and the cylinder wall of the inner cylinder generates inward pressing force to the tissue therein, so that when the shovel needle 10 moves upward, the pressing force can resist the internal stress of the tissue and be carried away from the human body by the shovel needle 10.

Therefore, the shovel needle 10 provided by the embodiment can realize the functions of tissue cutting and minimally invasive stripping, and is simple in structure and convenient to operate.

In this embodiment, the working section 11 has a split ring in cross-sectional shape. This setting makes operation section 11 be the arc, on the one hand, thereby can reduce the area with organizing the butt and reduce the degree of difficulty of inserting the tissue. On the other hand, the edge of the arc-shaped plate at the opening is a free edge, so that the arc-shaped plate is easy to generate elastic deformation when being pressed by the tissue in the cylinder in the process of inserting the arc-shaped plate into the tissue downwards, and the elastic restoring force of the arc-shaped plate counteracts the tissue in the cylinder to further clamp the tissue.

In this embodiment, the blade structure 12 is a convex head, a concave head, or a flat head, wherein the blade structure 12 is arc-shaped, the center of the blade structure 12 is flush with both ends, the flat head is formed, the center of the blade structure 12 is convex relative to both ends, the convex head is formed, and the center of the blade structure 12 is concave relative to both ends, and the concave head is formed.

The blade 10 shown in fig. 2 and 8 is a female head. The concave head facilitates shearing of tissue.

In fig. 7 and 10, the blade needle 10 is a flat head. The flat head is suitable for cutting smooth tissues so as to reduce the damage to the smooth tissues.

In fig. 6 and 9, the head of the shovel needle 10 is a convex head. The nose facilitates reducing the difficulty of inserting the needle 10 into tissue.

The skilled person can select the required cutting edge shape according to the actual requirement, or simultaneously equip a plurality of cutting edges 10 corresponding to a plurality of cutting edge shapes.

In this embodiment, the blade needle 10 is provided with a size indicator for indicating the insertion depth on the outer side surface thereof. This arrangement facilitates the operator to visually know the insertion depth of the blade needle 10 through the size indicator to facilitate the cutting operation.

In this embodiment, the tissue cutting needle further includes an extension section 13 connected to the operation section 11, and the extension section 13 is disposed in a cylindrical shape. The extension 13 may be provided as a solid by those skilled in the art. The extension section 13 is cylindrical, so that on one hand, the bending resistance of the extension section 13 can be enhanced, and on the other hand, an avoidance space is provided for the insertion of the round needle 20.

Referring to fig. 7, the blade structure 12 has a cutting line (cutting edge) for abutting against the tissue and cutting the tissue, and the cutting line is disposed away from the outer cylinder wall of the working section 11 and close to the inner cylinder arm of the working section 11. In comparison, the outer tubular wall of the cutting line, which is close to the working section 11, is sharper and is prone to lacerate tissue. The cutting line is close to the inner cylinder arm of operation section 11, forms the guide face of slope between the outer surface of cutting line and shovel needle 10, and the tissue is conflicted this guide face and is made the fine setting and be favorable to shovel needle 10 to follow the tissue line and surely get to reduce the destruction degree to the tissue.

In this embodiment, the round needle 20 may have a solid rod structure or a cylindrical structure, and the needle head of the round needle 20 has a pointed, round or flat shape.

In fig. 6 and 9, the needle tip of the round needle 20 is a flat head. The tip of the round needle 20 is beveled to have a sharp corner that fits against the outer surface of the round needle 20. With the arrangement, the needle head is sharper.

In the configuration of fig. 7, the needle tip of the round needle 20 is pointed. The tip of the round needle 20 extends conically with a centrally arranged pointed angle. The needle head is conical so that the circular needle 20 can drive the tissue to move towards the peripheral side after being inserted into the tissue.

In the configuration of fig. 8, the round needle 20 has a rounded tip. The outer contour of the needle tip of the round needle 20 is spherical.

In this embodiment, the inner needle 30 is a conventional injection needle or guide needle.

Referring to fig. 1 to 4, the shovel needle 10 further includes a shovel needle seat 14 connected to the extension section 13, the circular needle 20 includes a circular needle body 21 and a circular needle seat 22 connected to the circular needle body 21, the inner needle 30 includes an inner needle body and an inner needle seat for fixing the inner needle body, the shovel needle seat 14 is provided with a circular needle 20 insertion hole for inserting the circular needle seat 22, and the circular needle seat 22 is provided with an inner needle 30 insertion hole for inserting the inner needle seat.

The shovel needle seat 14, the round needle seat 22 and the inner needle seat are respectively arranged to fix the corresponding shovel needle 10, the round needle 20 and the inner needle 30. So as to facilitate the rotating operation of the spade needle 10, the round needle 20 and the inner needle 30 or the operation of inserting the tissue at a fixed angle.

The arrangement of the circular needle 20 jack and the inner needle 30 jack is used for limiting to ensure the certainty of the sleeving connection among the shovel needle 10, the circular needle 20 and the inner needle 30. The round needle holder 22 is inserted into the round needle 20 insertion hole, and the round needle 20 insertion hole restricts the round needle holder 22 from moving in the direction of the blade needle 10. The inner needle seat is inserted into the inner needle 30 insertion hole, and the inner needle 30 insertion hole limits the movement of the inner needle 30 towards the round needle 20. The tip of the inner needle 30 protrudes from the tip of the round needle 20, and the tip of the round needle 20 protrudes from the tip of the shovel needle 10. In this case, the person skilled in the art can adjust the protruding size of the corresponding needle head by setting the length of each medical needle, so as to realize the smooth transition effect between two adjacent sleeved medical needles.

In the illustrated embodiment, the circular needle holder 22 partially plugs into the circular needle 20 receptacle and partially protrudes from the circular needle 20 receptacle, and the inner needle holder partially plugs into the inner needle 30 receptacle and partially protrudes from the inner needle 30 receptacle. In other embodiments, the relationship between the circular needle seat 22 and the circular needle 20 insertion hole may be such that the circular needle seat 22 is integrally disposed in the circular needle 20 insertion hole. The inner needle holder may be integrally disposed in the insertion hole of the inner needle 30, which is not limited herein.

It should be noted that, the circular needle 20 insertion hole and the inner needle 30 insertion hole are both communication holes, and the circular needle 20 insertion hole is used for the insertion of the circular needle seat 22 and is also communicated with the operation cavity of the shovel needle 10 so as to allow the circular needle 20 to pass through. The inner needle 30 jack is used for inserting the inner needle seat, and is communicated with the hollow round needle 20 for inserting the inner needle 30.

In this embodiment, the inner needle holder is provided with a connection hole for connecting the syringe 50. At this time, the inner needle 30 has a hollow structure, and a communication hole communicates with the inside of the inner needle 30 for injecting or withdrawing a liquid.

Referring to fig. 4 again, the medical needle set further includes a fixing cover 40 detachably connected to the needle-shoveling seat 14, and the fixing cover 40 encloses the needle-shoveling seat 14 to accommodate the circular needle seat 22 and the inner needle seat therein.

The fixed cover 40 and the needle holder 14 are closed to store the round needle holder 22 and the needle holder. The fixing cover 40 and the needle base 14 may be clamped, sleeved or screwed, and is not limited herein.

In this embodiment, the fixing cover 40 has a first blind hole 41 on a surface abutting against the needle holder 14, the first blind hole 41 and the circular needle 20 insertion hole together form an accommodating space cooperating with the circular needle holder 22, the fixing cover 40 has a second blind hole 42 on a bottom surface of the first blind hole 41, and the second blind hole 42 and the inner needle 30 insertion hole together form an accommodating space cooperating with the inner needle 30. In this design, the fixing cover 40 and the needle holder 14 are closed, and the circular needle holder 22 and the inner needle holder are fixed.

The following exemplifies the cooperative use of the medical needles.

Example one

Referring to fig. 6 to 8, the shovel needle 10 and the round needle 20 are used together, the shovel needle 10 is a hollow structure, and the round needle 20 is a solid rod structure. The circular needle 20 is inserted into the shovel needle 10 and the needle head of the circular needle 20 protrudes from the shovel needle 10.

The round needle 20 is first inserted downward into the tissue, and then the spade needle 10 is inserted downward into the tissue along the round needle 20. At this time, the circular needle 20 is inserted into the tissue as a guide needle in advance, which can provide a positioning function for the insertion of the shovel needle 10, and also serve as a percutaneous needle to reduce the difficulty of inserting the shovel needle 10 into the tissue.

In fig. 6, the needle tip of the round needle 20 is a flat tip, and when the round needle 20 is used as a skin-breaking needle, the needle tip of the round needle 20 is preferably a flat tip.

In fig. 7, the tip of the round needle 20 is pointed, and when the round needle 20 is used as the guide needle, the tip of the round needle 20 is preferably pointed.

In fig. 8, the round needle 20 has a round tip.

Example two

The shovel needle 10, the round needle 20 and the inner needle 30 are used together. The shovel needle 10 and the round needle 20 are both hollow structures.

Referring to fig. 9 and 10, the inner needle 30 is inserted into the circular needle 20 and the needle tip of the inner needle 30 protrudes from the circular needle 20, the circular needle 20 is inserted into the shovel needle 10 and the needle tip of the circular needle 20 protrudes from the shovel needle 10.

While the inner needle 30 is shown as a hollow rod, it will be appreciated by those skilled in the art that the inner needle 30 may also be a solid rod.

The inner needle 30 is previously inserted into the tissue as a guide needle, and then the round needle 20 is inserted into the inner needle 30 and inserted into the tissue along the inner needle 30 to widen the passage. Then, a larger diameter round needle 20 may be inserted for further widening or a blade needle 10 may be inserted to cut the tissue. In addition, after the shovel needle 10 cuts the tissue, the tissue can be extracted through the round needle 20 or the hollow inner needle 30, so that the effect of accurately extracting the tissue can be achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. A shovel needle is used for cutting tissues and minimally invasive stripping and is characterized by comprising a cylindrical operation section, wherein the operation section is provided with a first cylinder end and a second cylinder end which are oppositely arranged, and a blade structure capable of cutting the tissues is arranged at the first cylinder end of the shovel needle;

2. The blade needle of claim 1 wherein said working section is split in cross-sectional shape.

3. The spade needle according to claim 1 wherein said blade structure is a nose, a recess, or a flat head, wherein said blade structure is arcuate, wherein a center of said blade structure is flush with two ends of said blade structure is said flat head, wherein a center of said blade structure is convex with respect to said two ends of said blade structure, wherein a center of said blade structure is concave with respect to said two ends of said blade structure, and wherein said center of said blade structure is said recess head.

4. The spade needle according to any of claims 1 to 3, wherein said tissue cutter further comprises an extension section connected to said working section, said extension section being cylindrically disposed.

5. A medical needle set, comprising:

the shovel needle is the shovel needle according to claim 4;

6. The medical needle set of claim 5 wherein said round needle has a tip shape that is pointed, rounded or flattened.

7. A medical needle set, comprising:

the shovel needle is the shovel needle according to claim 4;

8. The medical needle set as set forth in claim 7, further comprising an inner needle capable of being fitted over the round needle with its needle tip protruding therefrom, wherein the inner needle has a cylindrical structure or a solid structure.

9. The medical needle set according to claim 8, wherein the needle further comprises a needle holder connected to the extension section, the circular needle comprises a circular needle body and a circular needle holder connected to the circular needle body, the inner needle comprises an inner needle body and an inner needle holder fixing the inner needle body, the circular needle body is inserted into the needle holder, the inner needle body is inserted into the circular needle body, the needle holder is provided with a circular needle insertion hole for inserting the circular needle holder, and the circular needle holder is provided with an inner needle insertion hole for inserting the inner needle holder.

10. The medical needle set as claimed in claim 9, further comprising a fixing cover detachably coupled to the needle holder, the fixing cover enclosing the needle holder to fix the circular needle holder and the inner needle holder therein.