CN212262053U - Remaining needle seat body and remaining needle thereof - Google Patents

Abstract

The utility model discloses an indwelling needle seat body and an indwelling needle thereof; in the indwelling needle seat body, the tail end of the catheter seat is connected with the needle seat; a pushing device is arranged in the needle base, and the front end of the pushing device supports the catheter base; so that the pushing device can push the catheter holder to extend out. The indwelling needle comprises the indwelling needle seat body, and the front end of the catheter seat is integrally formed or fixedly connected with a catheter. Solves the problems that in the prior art, the indwelling needle is inconvenient for medical care personnel to operate by one hand, the catheter holder is simply pushed to operate inconveniently by a manual mode, and the blood vessel of a patient is easy to stab. The indwelling needle seat body and the indwelling needle thereof can completely operate the puncture process by one hand of medical staff; and the pushing device pushes the catheter seat forwards in a pinching mode, so that the catheter can reasonably control to enter the blood vessel. Due to the mode of pinching the needle seat, the propelling speed and the depth of the catheter can be conveniently controlled, the reasonable control of the puncture process of the remaining needle is ensured, and the accidental injury to a patient is reduced.

Description

Remaining needle seat body and remaining needle thereof

Technical Field

The utility model relates to an intervene and input in the human body or defeated on the human body apparatus structural design technical field, especially relate to a keep somewhere needle file body and keep somewhere needle thereof.

Background

Intravenous infusion is an important approach for clinical treatment and administration, and according to public data, Chinese people infuse more than billions of bottles every year. With the push of 'zero tolerance of steel needles', the remaining needle becomes a main tool for clinical transfusion treatment, has the advantages of difficult damage to blood vessels and reduction of the number of times of venipuncture of patients, ensures intravenous medication, relieves the pain of the patients and improves the working efficiency of nurses.

In the prior art, in the operation process of clinically using the indwelling needle, medical care personnel usually pinch the needle seat of the indwelling needle by fingers to realize the puncture of the indwelling needle, and then push the catheter seat by the fingers to realize the extension of the catheter.

However, in the process of pushing the catheter base by fingers, the pushing force is not easy to control, and the blood vessel of a patient is easy to puncture or hurt the patient; moreover, the manual pushing direction of the medical staff is not easy to control, the extending direction of the catheter is easy to change, and the patient is further stabbed. When the catheter is placed and the steel needle is retracted by one hand, the thumb and the index finger exert force in opposite directions at the same time, the coordination of the advancing and retreating speed and the timing of each finger is difficult to grasp, and the puncture failure is easy to cause.

It can be seen that the indwelling needle of the prior art exists: during the puncture process of the indwelling needle, the operation is inconvenient for medical care personnel by one hand, the operation is inconvenient for pushing the catheter holder simply by a manual mode, and the blood vessel of a patient is easy to be punctured. Particularly, in the process of single-hand operation of medical care personnel, the medical care personnel basically hold and push the catheter by fingers, which is very inconvenient to push the catheter holder and seriously wastes medical resources.

SUMMERY OF THE UTILITY MODEL

In view of the above, the main object of the present invention is to provide a puncturing procedure that can be completely operated by a single hand of a medical worker; the push speed and the depth of the catheter can be conveniently controlled, the reasonable control of the puncture process of the indwelling needle is ensured, and the indwelling needle base and the indwelling needle thereof which injure patients by mistake are reduced.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an indwelling needle holder comprising: a catheter holder and a needle holder; the tail end of the catheter seat is connected with the needle seat; a pushing device is arranged in the needle seat, and the front end of the pushing device supports the catheter seat; so that the pushing device can push the catheter holder to extend.

In a preferred embodiment, the needle seat is provided with a pushing cavity, the tail end of the catheter seat extends into the pushing cavity, and the pushing device is arranged between the tail end of the catheter seat and the bottom of the pushing cavity.

In a preferred embodiment, the pushing device is an elastic body, and elastic layers of the needle seat are arranged on two sides of the pushing device; pressing the elastic layer to deform, pushing the elastic body to deform, and pushing the catheter seat to extend out by the elastic body.

In a preferred embodiment, the elastic body is an oval sphere structure, and the elastic body is respectively supported in contact with the elastic layer and the tail part of the catheter seat.

In a preferred embodiment, a steel needle hole is formed through the ball structure, and the size of the steel needle hole is larger than the diameter of the needle seat connecting steel needle.

In a preferred embodiment, the elastomer comprises: one end of the push rod is hinged with the inner wall of the elastic layer, and the other end of the push rod is in contact with and supports the tail of the catheter seat.

In a preferred embodiment, the elastomer further comprises: the torsional spring is arranged between the elastic layer and the push rod and pushes the push rod to rotate towards the direction close to the central axis of the needle seat.

In a preferred embodiment, the elastomer further comprises: the auxiliary rod, one end of the auxiliary rod is hinged with the bottom of the pushing cavity, the other end of the auxiliary rod is hinged with the push rod, and an elastic pulling piece is arranged between the push rod and the auxiliary rod.

In a preferred embodiment, the elastomer comprises: each side of the quadrilateral structure is hinged together, the quadrilateral structures are hinged with each other, one end of the quadrilateral structure, which is close to the tail of the catheter holder, is in contact with the tail of the catheter holder for supporting, and the quadrilateral structures are hinged with the inner wall of the elastic layer on one side close to the inner wall of the elastic layer.

In a preferred embodiment, an elastic pulling piece is arranged inside each quadrilateral structure, so that the size of the quadrilateral structure in the length direction of the axis of the needle seat is reduced.

In a preferred embodiment, the catheter hub is a three-way structure; the tee bend structure includes: the needle comprises a needle seat, a first channel, a second channel and a third channel, wherein the first channel and the second channel penetrate through the steel needle, the third channel is connected with an infusion hose, and the direction of an outer opening of the third channel is parallel to the axis of the needle seat.

In a preferred embodiment, the third channel is provided at an upper position of the catheter hub.

In a preferred embodiment, the method further comprises: the protecting sleeve is sleeved at the tail of the catheter seat and stretches into the pushing cavity.

In a preferred embodiment, the tail part of the protective sleeve is provided with a steel needle hole, and the inner wall of the steel needle hole is provided with an elastic bulge; the end part of the needle seat connected with the steel needle is provided with a slip-resistant groove, and the elastic bulge is matched with the slip-resistant groove, so that the steel needle connected with the needle seat is connected with the protective sleeve.

In a preferred embodiment, the outer wall of the tail end of the protective sleeve is provided with an annular pushing groove, and one end of the pushing device is supported in contact with the inner part of the pushing groove.

An indwelling needle comprises the indwelling needle seat body, and a catheter is integrally formed or fixedly connected with the front end of the catheter seat.

In a preferred embodiment, the tail end of the needle seat is provided with a steel needle fixing piece, and the center of the steel needle fixing piece is fixedly connected with a steel needle.

The utility model discloses a keep somewhere needle pedestal and keep somewhere needle has following beneficial effect:

this keep somewhere needle pedestal includes: a catheter holder and a needle holder; the tail end of the catheter seat is connected with the needle seat; a pushing device is arranged in the needle seat, and the front end of the pushing device supports the catheter seat; so that the pushing device can push the catheter holder to extend. The indwelling needle comprises the indwelling needle seat body, and the front end of the catheter seat is integrally formed or fixedly connected with a catheter. The indwelling needle solves the problems that in the prior art, the indwelling needle is inconvenient to operate by one hand, and when the indwelling needle is operated by one hand, the finger position needs to be adjusted by the right hand before the tube is delivered, so that the puncture needle entering the blood vessel when the hand is reversed tends to wander away in the blood vessel intima, and when the intima is abraded, the needle core which is withdrawn in the lump loses the supporting function and is freely advanced by the catheter, and the tube delivery failure is easily caused. When the catheter is placed and the steel needle is retracted by one hand, the thumb and the index finger exert force in opposite directions at the same time, the coordination of the advancing and retreating speed and the timing of each finger is difficult to grasp, and the puncture failure is easy to cause. . Particularly, in the process of single-hand operation of medical care personnel, the medical care personnel basically hold and push the catheter by fingers, which is very inconvenient to push the catheter holder and seriously wastes medical resources. The indwelling needle seat body and the indwelling needle thereof can completely operate the puncture process by one hand of medical staff; and the pushing device pushes the catheter seat forwards in a pinching mode, so that the catheter is reasonably controlled to enter the blood vessel to stretch into the blood vessel. Due to the mode of pinching the needle seat, the propelling speed and the depth of the catheter can be conveniently controlled, the reasonable control of the puncture process of the remaining needle is ensured, and the accidental injury to a patient is reduced.

Drawings

FIG. 1 is a schematic structural view of an indwelling needle according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view taken along line A-A of the indwelling needle of FIG. 1 according to one embodiment of the present disclosure;

FIG. 3 is a sectional view taken along line B-B of the indwelling needle shown in FIG. 1 according to one embodiment of the present disclosure;

fig. 4 is a schematic structural view of an indwelling needle according to another embodiment of the present disclosure.

[ description of main reference symbols ]

1. A catheter hub, 11, a third channel;

2. a needle seat 21, a pushing cavity 22, an elastic layer 23 and a steel needle fixing piece;

3. a pushing device;

31. an elastic body 311, a sphere structure 312, a push rod 314 and an auxiliary rod;

4. a steel needle;

5. a protective sleeve 51, a pushing groove;

6. a conduit.

Detailed Description

The remaining needle holder and the remaining needle thereof according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, 2, 3 and 4, the indwelling needle holder body includes: the catheter seat 1 of the indwelling catheter 6 and the needle seat 2 pushed by hand are connected. Connect needle file 2 at the tail end of pipe seat 1, sliding connection between needle file 2 and the pipe seat 1 guarantees that pipe seat 1 can slide forward, and then stretches into patient's blood vessel with pipe 6 that pipe seat 1 front end is connected, realizes the effect of keeping somewhere the needle.

In order to avoid the defect that the medical staff is required to have high medical skill, the extending direction of the catheter 6 is inconvenient to control, and then the patient is stabbed, so that the medical staff is prevented from pushing the needle manually. The inside of the needle base 2 is provided with a pushing device 3, and the front end of the pushing device 3 supports the catheter base 1; so that the pushing device 3 can push the catheter hub 1 to extend. The pushing device 3 can be of various structures or materials capable of realizing telescopic structure, and can realize the forward sliding structure of the catheter holder 1 as long as the requirement of convenient manual simple control of medical personnel can be met.

Of course, the installation of the pushing device 3 is convenient, and the operation of the pushing device 3 can be conveniently realized by pinching the needle base 2 with the fingers of the medical staff. A pushing cavity 21 is formed in one end, connected with the catheter seat 1, of the needle seat 2, the tail end of the catheter seat 1 extends into the pushing cavity 21, and a pushing device 3 is arranged between the tail end of the catheter seat 1 and the bottom of the pushing cavity 21.

A trigger device may be disposed on a sidewall of the needle holder 2 to control the pushing device 3, for example, a pressing button may be disposed on a sidewall of the needle holder 2, and the pressing button directly pushes the pushing device 3, so that the pushing device 3 pushes the catheter holder 1.

As shown in fig. 2 and 3, in a preferred embodiment, the pushing device 3 is an elastic body 31 with a large deformation interval, and the elastic layer 22 (also with the large deformation interval) of the needle holder 2 is arranged on both sides of the pushing device 3; pressing elastic layer 22 to deform, elastic layer 22 pushes elastic body 31 to deform, and elastic body 31 pushes catheter seat to extend out. It should be noted here that, since the indwelling needle is usually a disposable product, both the elastic body 31 and the elastic layer 22 can be selected to be non-recoverable materials, and the catheter hub 1 is pushed once to extend the complete catheter 6 into the blood vessel. Of course, the recoverable material may also be sufficient to provide the deformation promoting effect.

Preferably, the elastic body 31 is an elliptical spherical structure 311, and the elastic body 31 is respectively supported in contact with the elastic layer 22 and the tail of the catheter hub 1; medical personnel pinches the deformation of the elastic layer 22 through fingers, and presses the deformation of the ball structure 311, so that the size of the ball structure 311 in the length direction of the needle base 2 is enlarged, and the catheter base 1 is pushed to slide.

In order to avoid the interference between the ball structure 311 and the steel needle 4 for puncturing, especially the ball structure 311 is interfered with each other during the installation of the steel needle. A steel pin hole is formed through the ball structure 311.

In order to further ensure that the steel needle 4 smoothly passes through the ball structure 311, the size of the steel needle hole is larger than the diameter of the steel needle 4 connected with the needle base 2.

As shown in fig. 4, in another embodiment, the elastic body 31 includes: a push rod 312 for pushing the catheter base 1, wherein one end of the push rod 312 is hinged with the inner wall of the elastic layer 22, and the other end of the push rod 312 contacts and supports the tail part of the catheter base 1. The deformation of the elastic layer 22 effects a compression of the push rod 312, which in turn pushes the catheter hub 1 at the other end of the push rod 312, resulting in a sliding of the catheter hub 1.

In order to realize that the pushing device 3 can automatically recover, the use of the whole remaining needle is prevented from being influenced by misoperation. The elastic body 31 further includes: the torsional spring is arranged between the elastic layer 22 and the pushing rod 312 and pushes the pushing rod 312 to rotate towards the direction close to the central axis of the needle seat 2; namely: the structure of the pushing device 3 is restored to the original state, and the function on the catheter seat 1 is eliminated; furthermore, certain pretightening force is guaranteed, the catheter base 1 is prevented from being stretched out by misoperation, and the medical staff can conveniently hold the needle base 2 for puncture.

Preferably, the elastic body 31 further includes: one end of the auxiliary rod 314 is hinged with the bottom of the pushing cavity 21, the other end of the auxiliary rod 314 is hinged with the pushing rod 312, and an elastic pulling piece is arranged between the pushing rod 312 and the auxiliary rod 314; can be a torsion spring or an elastic wire structure; ensuring the strength of the pushing device 3.

In yet another embodiment, the elastic body 31 includes: each side of the quadrilateral structures is hinged together, the quadrilateral structures are hinged with each other, one end of the quadrilateral structure, which is close to the tail of the catheter holder 1, is in contact support with the tail of the catheter holder 1, and the quadrilateral structures are hinged with the inner wall of the elastic layer 22 on one side close to the inner wall of the elastic layer 22.

Certainly, in order to realize the recovery of the pushing device 3 and a certain pre-tightening force, an elastic pulling piece is arranged inside each quadrilateral structure, so that the size of the quadrilateral structure in the length direction of the axis of the needle base 2 is reduced.

As shown in figures 1, 2, 3 and 4, in order to avoid the problem that the contact surface of the Y-shaped indwelling needle with the patient is large in the prior art, the fixing area is too large when the puncture position area is small (especially the arm of a child is small), and the indwelling needle is easy to be mistakenly moved by the patient when the patient moves, so that the patient is pricked. Especially children can not completely cooperate with medical care personnel to treat, and if stabbing pain occurs in the treatment process, the treatment burden is further increased, and the operation is inconvenient. The catheter seat 1 is of a three-way structure; the tee bend structure includes: a first channel and a second channel which penetrate through the steel needle, and a third channel 11 which is connected with the transfusion hose, wherein the direction of the outer opening of the third channel 11 is parallel to the axis of the needle seat 2. The area of the fixed structure needed in the treatment process is reduced, and the possibility of misoperation is reduced.

Of course, the third channel 11 is provided at an upper position of the catheter hub 1, in order to further reduce the effect of interference with the needle hub 2 and to further reduce the surface contact area at the site of penetration of the patient.

In order to realize that the needle point of the steel needle 4 can be protected in the withdrawing process of the puncture steel needle 4, thereby avoiding stabbing medical staff. The indwelling needle holder further comprises: lag 5 is established to lag 5, 1 afterbody cover of pipe seat, and inside stretching into promotion cavity 21 of lag 5.

The tail part of the protective sleeve 5 is provided with a steel needle hole, and the inner wall of the steel needle hole is provided with an elastic bulge; the end part of the steel needle 4 connected with the needle base 2 is adapted to be provided with a slip-resistant groove, and the elastic bulge is matched with the slip-resistant groove, so that the steel needle 4 connected with the needle base 2 is connected with the protective sleeve 5.

In order to further contact and support the pushing device 3 and avoid the pushing device 3 and the protecting sleeve 5 from falling off, an annular pushing groove 51 is formed in the outer wall of the tail end of the protecting sleeve 5, and one end of the pushing device 3 is in contact and support inside the pushing groove 51.

The utility model also discloses an keep somewhere needle, keep somewhere the needle pedestal including the aforesaid, front end integrated into one piece or fixed connection pipe 6 of pipe seat 1.

In order to fix the steel needle 4 of the needle base 2 conveniently, the tail end of the needle base 2 is provided with a steel needle fixing piece 23, and the center of the steel needle fixing piece 23 is fixedly connected with the steel needle 4.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. An indwelling needle holder body, comprising: a catheter seat (1) and a needle seat (2); the tail end of the catheter seat (1) is connected with the needle seat (2); a pushing device (3) is arranged in the needle seat (2), and the front end of the pushing device (3) supports the catheter seat (1); the pushing device (3) can push the catheter seat (1) to extend out; the needle seat (2) is provided with a pushing cavity (21), the tail end of the catheter seat (1) extends into the pushing cavity (21), and the pushing device (3) is arranged between the tail end of the catheter seat (1) and the bottom of the pushing cavity (21); the pushing device (3) is an elastic body (31), and the elastic layers (22) of the needle seat (2) are arranged at the two sides of the pushing device (3); the elastic layer (22) is pressed to deform, the elastic layer (22) pushes the elastic body (31) to deform, and the elastic body (31) pushes the catheter seat to extend out.

2. The indwelling needle hub according to claim 1, in which the resilient body (31) is an elliptical sphere structure (311), the resilient body (31) being supported in contact with the resilient layer (22) and the catheter hub (1) tail, respectively;

a steel needle hole is arranged through the ball structure (311), and the size of the steel needle hole is larger than the diameter of the needle seat (2) connected with the steel needle (4).

3. The indwelling needle hub according to claim 1, in which the resilient body (31) comprises: one end of the push rod (312) is hinged with the inner wall of the elastic layer (22), and the other end of the push rod (312) is in contact with and supports the tail of the catheter seat (1).

4. The indwelling needle holder according to claim 3, wherein the resilient body (31) further comprises: the torsional spring is arranged between the elastic layer (22) and the push rod (312) and pushes the push rod (312) to rotate towards the direction close to the central axis of the needle seat (2).

5. The indwelling needle holder according to claim 3, wherein the resilient body (31) further comprises: the auxiliary rod (314), one end of the auxiliary rod (314) is hinged with the bottom of the pushing cavity (21), the other end of the auxiliary rod (314) is hinged with the pushing rod (312), and an elastic pulling piece is arranged between the pushing rod (312) and the auxiliary rod (314).

6. The indwelling needle hub according to claim 1, in which the resilient body (31) comprises: each side of the quadrilateral structure is hinged together, the quadrilateral structures are hinged with each other, one end of the quadrilateral structure, which is close to the tail of the catheter seat (1), is in contact with and supported by the tail of the catheter seat (1), and the quadrilateral structures are hinged with the inner wall of the elastic layer (22) on one side close to the inner wall of the elastic layer (22); an elastic pulling piece is arranged in each quadrilateral structure, so that the size of the quadrilateral structure in the length direction of the axis of the needle seat (2) is reduced.

7. The indwelling needle holder according to any of claims 1 to 6, wherein the catheter holder (1) is of a three-way construction; the tee bend structure includes: a first channel and a second channel which penetrate through the steel needle, and a third channel (11) which is connected with an infusion hose, wherein the direction of an outer opening of the third channel (11) is parallel to the axis of the needle seat (2);

the third channel (11) is arranged at the upper side position of the catheter seat (1).

8. The indwelling needle holder according to any one of claims 1 to 6, further comprising: the tail of the catheter seat (1) is sleeved with the protecting sleeve (5), and the protecting sleeve (5) extends into the pushing cavity (21);

the tail part of the protective sleeve (5) is provided with a steel needle hole, and the inner wall of the steel needle hole is provided with an elastic bulge; the end part of the needle seat (2) connected with the steel needle is provided with a slip-resistant groove, and the elastic bulge is matched with the slip-resistant groove, so that the steel needle (4) connected with the needle seat (2) is connected with the protective sleeve (5);

the outer wall of the tail end of the protective sleeve (5) is provided with an annular pushing groove (51), and one end of the pushing device (3) is supported in the pushing groove (51) in a contact mode.

9. An indwelling needle comprising the indwelling needle holder body according to any one of claims 1 to 8, wherein the catheter (6) is integrally formed or fixedly attached to the front end of the catheter holder (1).

10. The indwelling needle according to claim 9, wherein the needle holder (2) is provided with a steel needle fixing member (23) at the tail end, and the steel needle fixing member (23) is fixedly connected with the steel needle (4) at the center.

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