CN219090756U

CN219090756U - Tunnel needle and PICC puts tub auxiliary device

Info

Publication number: CN219090756U
Application number: CN202222920059.5U
Authority: CN
Inventors: 黄小娟; 陈文姿
Original assignee: Shenzhen Luohu Peoplel's Hospital
Current assignee: Shenzhen Luohu Peoplel's Hospital
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-05-30
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a tunnel needle and PICC puts a tub auxiliary device, wherein, this tunnel needle includes: a rod body; a traction head fixedly disposed on one end of the rod body, the traction head comprising: the first ladder end and second ladder end, the second ladder end sets up on the one end that first ladder end deviates from the body of rod, is provided with a plurality of fixed screw on the second ladder end, and the outside setting of fixed screw protrusion second ladder end. According to the utility model, the traction end head is arranged at one end of the rod body, the traction end head comprises the first ladder end head and the second ladder end head, and the second ladder end head is provided with a plurality of fixed threads.

Description

Tunnel needle and PICC puts tub auxiliary device

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to a tunnel needle and PICC (peripherally inserted central catheter) auxiliary device.

Background

The central venous catheter (PICC) is used as a safe and convenient venous access in clinic, and is a preferred mode especially for patients needing chemotherapy or infusion of hypertonic and irritant liquid, but due to some limiting conditions, such as too small a preset tube vein diameter, poor vascular anatomical position and other factors, a plurality of patients cannot smoothly insert the PICC or risk of catheter-related complications after insertion is too high, and the tunnel-type PICC insertion technology is applied, so that the problem is well solved.

In the prior art, medical personnel need use the tunnel needle to overlap the tip of pipe to put the in-process of pipe to put the pipe and remove to the skin outside through the mode of pulling, tunnel needle is used for forming the arc tunnel of burying the abdomen and penetrating the pipe in the abdominal wall subcutaneous tissue, the tunnel needle for the PICC of an improvement that is disclosed in CN216570132U, but the tunnel needle of this disclosure and tunnel needle among the prior art in the use problem lies in, the pipe can meet the resistance of skin at the puncture in-process under the skin, consequently the pipe is easy to slide on tunnel needle end, the combination traction is needed again after the landing, it is very inconvenient.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

In order to solve the problems that in the prior art, the tunnel needle can encounter skin resistance in the subcutaneous puncture process due to the fact that the catheter easily slides on the tunnel needle end, combined traction is needed to be carried out again after the catheter slides down, and the combined process is inconvenient due to the fact that the combined part is possibly subcutaneous, the utility model provides the tunnel needle and the PICC (peripherally inserted central catheter) auxiliary device.

The utility model is realized by the following technical scheme:

a tunneling needle, wherein the tunneling needle comprises:

a rod body;

traction end, traction end is fixed to be set up on the one end of body of rod, traction end includes:

the diameter of the first step end is smaller than that of the rod body;

the second step end, the second step end sets up first step end deviates from on the one end of body of rod, the diameter size of second step end is less than the diameter size of first step end, be provided with a plurality of fixed screw threads on the second step end, fixed screw thread protrusion the outside setting of second step end.

The tunnel needle, wherein, the one end that deviates from on the second ladder end is provided with the direction end, the direction end is the circular cone shape, the direction end deviates from the one end of second ladder end is along predetermined radian smooth setting.

The tunnel needle, wherein the central line of the guiding end head, the central line of the second ladder end head and the central line of the first ladder end head are positioned on the same straight line.

The tunnel needle, wherein, fixed screw thread includes the orientation the installation face of direction end and orientation the block face of first ladder end, the installation face sets up along certain radian is smooth, the block face with the lateral surface of second ladder end sets up perpendicularly.

The tunnel needle, wherein be provided with a plurality of identification parts on the body of rod, a plurality of identification parts is followed the length direction interval reservation distance of the body of rod evenly sets up, identification part is used for measuring the body of rod penetrates the distance in subcutaneous tunnel.

The tunnel needle, wherein, set up on the body of rod the opposite one end of traction end is provided with the pole of gripping, the diameter size of gripping is greater than the diameter size of body of rod, the pole of gripping with the smooth transition setting in position that the body of rod is connected.

The tunnel needle, wherein, the outside of holding the pole is provided with the skid resistant course, skid resistant course periphery parcel sets up hold the pole outside.

The tunnel needle, wherein the rod body, the traction end head and the holding rod are integrally formed components.

The tunnel needle, wherein, the body of rod includes the portion of bending, the portion of bending sets up along predetermined angle bending.

PICC puts tub auxiliary device, wherein, PICC puts tub auxiliary device includes the tunnel needle of any one of above-mentioned.

The utility model has the beneficial effects that: according to the utility model, the traction end head is arranged at one end of the rod body, the traction end head comprises the first ladder end head and the second ladder end head, and the second ladder end head is provided with a plurality of fixed threads.

Drawings

FIG. 1 is a schematic perspective view of a tunnel needle of the present utility model;

FIG. 2 is an enlarged view of the structure of the A node in FIG. 1 of the tunnel needle of the present utility model;

FIG. 3 is a cross-sectional view of the structure of the traction head in the tunnel needle of the present utility model;

FIG. 4 is a schematic view of a first use condition of the tunneling needle of the present utility model;

fig. 5 is a schematic view of a second use state of the tunneling needle according to the present utility model.

In fig. 1 to 5: 100. a rod body; 110. a marking part; 200. a traction end; 210. a first step end; 220. a second step end; 221. a fixed thread; 222. a mounting surface; 223. a clamping surface; 230. a guide end; 300. a grip lever; 310. an anti-slip layer; 410. skin; 420. a blood vessel; 430. a conduit; 440. a tunnel needle outlet; 450. a tunnel needle inlet; 460. subcutaneous tunnel.

Detailed Description

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

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are involved in the embodiment of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Based on the above-mentioned problems of the prior art, the present utility model provides a tunneling needle, as shown in fig. 1 and 2, comprising: a rod body 100; a traction head 200, said traction head 200 being fixedly disposed on one end of said rod body 100, said traction head 200 comprising: a first stepped tip 210, the first stepped tip 210 having a diameter dimension that is smaller than the diameter dimension of the rod body 100; the second step end 220, the second step end 220 is disposed at an end of the first step end 210 facing away from the rod body 100, the diameter size of the second step end 220 is smaller than that of the first step end 210, a plurality of fixing threads 221 are disposed on the second step end 220, and the fixing threads 221 protrude out of the second step end 220.

In the utility model, the traction end head 200 is arranged at one end of the rod body 100, the traction end head 200 comprises the first ladder end head 210 and the second ladder end head 220, and a plurality of fixing threads 221 are arranged on the second ladder end head 220, so that when the medical staff establishes a subcutaneous tunnel 460 through a tunnel needle in actual use, the medical staff is connected with the catheter 430 through the fixing threads 221 on the second ladder end head 220 and then drags and shifts from the subcutaneous tunnel 460, and the friction force connected with the catheter is increased by the fixing threads 221, so that the situation that the catheter falls off in the traction process can be effectively avoided, and the smoothness of the operation process is ensured.

In the above embodiment, as shown in fig. 1, the main body of the tunnel needle of the present utility model includes a rod body 100 and a traction tip 200, wherein the traction tip 200 is fixedly disposed at one end of the rod body 100, and one end of the rod body 100 where the traction tip 200 is disposed is used to extend into the lower layer of the skin 410 of the patient, so as to establish a subcutaneous tunnel 460 and shift the catheter of the PICC catheter through the traction tip 200, thereby avoiding the problem that many patients cannot smoothly insert the PICC or the risk of catheter-related complications after the insertion is too high due to factors such as too small the preset vein tube diameter and poor anatomical position of the blood vessel 420.

Specifically, as shown in fig. 1 and fig. 2, the traction end 200 is further provided with a first step end 210 and a second step end 220, where the first step end 210 is disposed at one end of the rod body 100, and the second step end 220 is disposed at one end of the first step end 210, which is away from the rod body 100, and in a specific arrangement, the rod body 100, the first step end 210 and the second step end 220 are manufactured in an integrally formed manner, so as to ensure the integrity and stability of the use process.

Further, because the surface of the second ladder end 220 is smooth, even if the above arrangement still generates the hidden trouble that the catheter falls off from the traction end 200 in the process of moving the subcutaneous tunnel in actual use, as shown in fig. 1 and 2, the present utility model further provides a plurality of fixing threads 221 on the second ladder end 220, and the plurality of fixing threads 221 protrude out of the outer surface of the second ladder end 220, when the subcutaneous tunnel 460 established by the tunnel needle is in actual use, and when the tunnel needle is connected with the catheter end outside the blood vessel, the fixing threads 221 form a snap connection with the inner side of the catheter, at this time, the medical staff drags the catheter 430 along the subcutaneous tunnel 460 by the tunnel needle, and because the fixing threads 221 of the tunnel needle can generate an increased friction force on the inner side of the catheter 430 in the use process and generate an effect of a reverse snap force, thus realizing the effect of preventing the catheter 430 from falling off, effectively improving the use stability of the tunnel needle and reducing the occurrence probability of catheter falling off.

In another embodiment of the present utility model, as shown in fig. 1 and 2, since the tunnel needle has the function of establishing the subcutaneous tunnel 460 during actual use, in order to facilitate the puncture of the tunnel needle under the skin of the patient, in this embodiment, a guiding tip 230 is further disposed at an end of the second ladder tip 220 facing away from the first ladder tip 210, the guiding tip 230 is used for guiding the whole body of the traction tip 200 to move in the subcutaneous tunnel 460 of the patient, and in actual setting, the guiding tip 230 is configured in a conical shape, and at the same time, an end of the guiding tip 230 facing away from the second ladder tip 220 is smoothly disposed along a predetermined radian, i.e. is shaped like a bullet, so as to facilitate the medical staff to perform the operation puncture.

In the above embodiment, it is also preferable to arrange the center line of the guide tip 230 and the center line of the second step tip 220 and the center line of the first step tip 210 along the same straight line, even if the tunnel needle forms a straight bar-shaped whole, so that the medical staff can infer the operation position of the traction tip 200 through the handle position, thereby being convenient to combine with the catheter 430 and traction the catheter 430.

In another embodiment of the present utility model, in order to achieve the effective locking effect of the fixing bolt on the inner wall of the catheter 430, in this embodiment, as shown in fig. 3, the shape of the fixing thread 221 is further limited, in this embodiment, for convenience of description, a side of the fixing thread 221 facing the guiding tip 230 is defined as a mounting surface 222, one end of the fixing thread 221 facing the first stepped tip 210 is defined as a locking surface 223, wherein the mounting surface 222 is smoothly transitionally arranged along a certain radian, so that the guiding tip 230 and the second stepped tip 220 can quickly and smoothly enter the catheter 430, the locking surface 223 is vertically arranged with the outer side of the second stepped tip 220, and this arrangement has the advantage that when a medical staff pulls the catheter 430 by using a tunnel, the locking surface 223 of the fixing thread 221 can form a locking with the inner wall of the catheter 430, so as to prevent the falling off, and in a specific arrangement, the diameter of the fixing thread 221 is preferably larger than the inner diameter of the catheter 430 when the universal PICC is placed on the catheter, so that the tunnel needle can be combined with the catheter 430 in a rotating manner, and the catheter 430 can be removed from the subsequent combination with the catheter 430 due to the fact that the insertion tube is not cut off.

In another embodiment of the present utility model, as shown in fig. 1, in another embodiment of the present utility model, in order to facilitate a medical staff to determine the position of the guide tip in the subcutaneous tunnel 460 according to the length of the rod body 100, in this embodiment, a plurality of identification parts 110 may also be disposed on the rod body 100, and the plurality of identification parts 110 may be uniformly disposed at predetermined distances along the length direction of the rod body 100, in a specific embodiment, the identification parts 110 may be presented in the form of graduation marks and may be identified by means of the engraved roman numerals, and the predetermined distances may be set to general unit data, for example, 1mm, 1cm, etc., so that the medical staff can determine the length of the tunnel needle entering the subcutaneous tunnel 460 according to the size of the corresponding subcutaneous tunnel 460 on the patient's skin 410 in practical use, so as to be combined with the catheter 430 at a suitable length.

In another embodiment of the present utility model, as shown in fig. 1, a holding rod 300 is further disposed at an opposite end of the rod body 100 where the traction end 200 is disposed, where the holding rod 300 is used for facilitating stable holding of the tunnel needle by a medical staff, in order to improve holding stability, the diameter size of the holding rod 300 is preferably set to be larger than the diameter size of the rod body 100, on the other hand, in order to avoid scratch stimulus to a wound of a patient at a joint portion of the holding rod 300 and the rod body 100, in this embodiment, the joint portion of the holding rod 300 and the rod body 100 is preferably disposed in a smooth transition manner, and meanwhile, in a specific setting, the holding rod 300 and the rod body 100 may be manufactured in an integrally formed manner so as to avoid falling during use.

Based on the above embodiment, since the PICC puts a tub process and needs to offer the wound to human skin 410, consequently can inevitably exist blood coating on medical personnel's hand in the operation process, in order to avoid medical personnel to take place the slippage because of blood when operating the tunnel needle, still be provided with skid resistant course 310 in this embodiment in the outside of holding pole 300, skid resistant course 310 can specifically adopt rubber, polymer skid resistant coating etc. material to make, skid resistant course 310 sets up in the outside of holding pole 300 with the form of surrounding parcel, can effectively improve medical personnel's hand and hold the stability of pole 300 in-process.

In another embodiment of the present utility model, the rod body 100 may be further provided with a bending portion, and the bending portion is bent along a predetermined angle, so that the tunneler having a certain bending angle is easier to operate when the subcutaneous tunnel 460 is established for some patients due to different physical conditions of the patients, and therefore, when actually provided, a person skilled in the art can set various dimensions according to different situations, and the tunneler in the shape of the rod body 100 is convenient for medical staff to use, which is not limited by the applicant.

The actual use process of the tunnel needle is as follows:

as shown in fig. 4, after the PICC is placed on the patient, the catheter 430 is threaded out of the patient's blood vessel 420, but due to factors such as poor anatomical position of the blood vessel 420 at the threaded portion, many patients cannot be placed into the PICC smoothly or the risk of complications related to the catheter 430 after placement is too high, so that the operation of establishing a subcutaneous tunnel 460 to transfer the threaded portion of the catheter 430 is required, as shown in fig. 4, a medical staff is required to penetrate a tunnel needle from the tunnel needle inlet 450, combine the catheter 430 through the subcutaneous tunnel 460 to the tunnel needle outlet 440, and in the process, the fixing thread 221 on the second step end 220 on the tunnel needle and the inner wall of the catheter 430 form a clamp, the first step end 210 protects the end of the catheter 430, and in the process of using the tunnel needle to pull the catheter 430, the combination stability between the tunnel needle and the catheter 430 can be effectively improved, and separation in the subcutaneous tunnel is avoided.

Based on the above embodiments, the present utility model further provides a PICC catheterization assisting apparatus, as shown in fig. 1, where the PICC catheterization assisting apparatus includes a tunneling needle according to any one of the above embodiments, and the tunneling needle specifically includes: a rod body; traction end, traction end is fixed to be set up on the one end of body of rod, traction end includes: the diameter of the first step end is smaller than that of the rod body; the second step end, the second step end sets up first step end deviates from on the one end of body of rod, the diameter size of second step end is less than the diameter size of first step end, be provided with a plurality of fixed screw threads on the second step end, fixed screw thread protrusion the outside setting of second step end. According to the utility model, the traction end head is arranged at one end of the rod body, the traction end head comprises the first ladder end head and the second ladder end head, and the second ladder end head is provided with a plurality of fixed threads.

In summary, the present utility model provides a tunnel needle and a PICC catheter placement auxiliary device, where the tunnel needle specifically includes: a rod body; traction end, traction end is fixed to be set up on the one end of body of rod, traction end includes: the diameter of the first step end is smaller than that of the rod body; the second step end, the second step end sets up first step end deviates from on the one end of body of rod, the diameter size of second step end is less than the diameter size of first step end, be provided with a plurality of fixed screw threads on the second step end, fixed screw thread protrusion the outside setting of second step end. According to the utility model, the traction end head is arranged at one end of the rod body, the traction end head comprises the first ladder end head and the second ladder end head, and the second ladder end head is provided with a plurality of fixed threads.

It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims

1. A tunneling needle, characterized in that it comprises:

a rod body;

the diameter of the first step end is smaller than that of the rod body;

2. The tunnel needle according to claim 1, wherein a guide tip is provided at an end of the second stepped tip facing away from the first stepped tip, the guide tip being conical in shape, and an end of the guide tip facing away from the second stepped tip being smoothly provided along a predetermined arc.

3. The tunneling needle of claim 2, wherein a centerline of the guiding tip is collinear with a centerline of the second step tip and a centerline of the first step tip.

4. The tunneling needle of claim 2, wherein the fixed thread comprises a mounting surface facing the guiding tip and a snap-in surface facing the first stepped tip, the mounting surface being smoothly disposed along an arc, the snap-in surface being disposed perpendicular to an outer side of the second stepped tip.

5. The tunnel needle according to claim 1, wherein the rod body is provided with a plurality of identification parts, the identification parts are uniformly arranged at predetermined intervals along the length direction of the rod body, and the identification parts are used for measuring the distance of the rod body penetrating into the subcutaneous tunnel.

6. The tunnel needle according to claim 1, wherein a grip lever is provided at an opposite end of the shaft body where the traction tip is provided, a diameter dimension of the grip lever is larger than a diameter dimension of the shaft body, and a portion where the grip lever is connected to the shaft body is smoothly transitionally provided.

7. The tunneling needle of claim 6, wherein an anti-slip layer is disposed on an outer side of the grip, and wherein the anti-slip layer is circumferentially disposed on an outer side of the grip.

8. The tunneling needle of claim 6, wherein said shaft body, said traction tip, and said grip shaft are an integral component.

9. The tunneling needle of claim 1, wherein the shaft includes a bend disposed along a predetermined angle.

10. PICC catheterization assisting device, characterized in that it comprises a tunnel needle according to any of the preceding claims 1-9.