CN211244942U - Improved puncture needle special for transfusion port - Google Patents

Abstract

The utility model provides an improved special puncture needle for an infusion port, which comprises a protective casing, an elastic connecting piece and a puncturing needle assembly. The puncturing needle assembly and the elastic connecting piece are both located in the protective casing. The needle assembly is fixedly connected. The protective shell includes an opposite first side and a second side, an opposite third side and a fourth side, a top surface and a bottom surface; the first side and the second side are provided with corresponding opening windows, and the outer side of the bottom end of the window is provided with An openable and closable fixing slot; the puncture needle assembly includes a needle seat and a puncture needle fixed on the needle seat, a fixing rod is integrally connected above the needle seat, and the fixing rod is wrapped on the outside of the end of the puncture needle located above the needle seat, The two ends of the fixing rod respectively pass through the openings on the first side surface and the second side surface. The utility model can effectively prevent the medical staff from contacting the puncture needle, thereby avoiding the risk of being stabbed when the needle is pulled out, and improving the safety of the needle pulling out of the infusion port.

Description

An improved special puncture needle for infusion port

technical field

The utility model relates to the technical field of medical devices, in particular to an improved special puncture needle for an infusion port.

Background technique

Implantable venous infusion port (PORT), also known as implantable central venous catheter system, is an intravenous infusion device that can be implanted under the skin for long-term indwelling in the body. It is mainly composed of an injection seat for puncture and an intravenous catheter system. Infusion of various drugs, rehydration and nutritional support therapy, blood transfusion, blood sample collection, etc. When infusion or injection, it can be directly punctured and buried in the silicone diaphragm of the subcutaneous infusion port to achieve the purpose of drug administration, without repeated puncture of blood vessels, and can reduce the pain and difficulty of repeated puncture, and at the same time, various drugs can be directly delivered to the central vein, preventing Injury to peripheral veins by irritant drugs is a permanent channel for intravenous infusion in cancer patients.

However, in order to prevent leakage, the silicone diaphragm is generally designed to be thicker, and the viscosity of the silicone material is large, so the resistance when the needle is pulled out is large. In order to avoid the resistance formed when pulling the needle from pulling the patient's subcutaneous tissue, clinical medical staff will directly press the injection seat of the infusion port with their fingers and pull out the puncture needle when pulling out the needle. According to statistics, the probability of needle stick injury when the needle is pulled is as high as 43.37%. Because the needle tube is contaminated with liquid medicine and blood, it will easily cause the medical staff to be infected. This undoubtedly increases the fear of medical staff and is not conducive to the clinical work.

Utility model content

In view of the above problems, the utility model provides an improved special puncture needle for infusion port.

To achieve the above object, the utility model adopts the following technical solutions:

An improved special puncture needle for an infusion port, comprising a protective casing, an elastic connecting piece and a puncturing needle assembly, the puncturing needle assembly and the elastic connecting piece are both located in the protective casing, and the two ends of the elastic connecting piece are respectively connected with each other. The protective casing and the puncture needle assembly are fixedly connected.

The protective casing includes opposite first and second sides, opposite third and fourth sides, a top and a bottom; the top, the third and the fourth are closed, and the The bottom surface is open; the first side surface and the second side surface are respectively provided with opening windows along the vertical direction, and the outer side of the bottom end of the opening window is provided with a fixing card that can be opened and closed to both sides of the opening window The fixing slot is integrally connected with the protective casing and is located on the outer side of the protective casing; one end of the elastic connecting piece is fixed on the top surface.

The puncture needle assembly includes a needle seat and a puncture needle fixedly penetrated on the needle seat, a fixing rod is integrally connected above the needle seat, and the fixing rod is wrapped around the puncture needle located above the needle seat. On the outer side of one end, the two ends of the fixing rod respectively pass through the openings on the first side surface and the second side surface, and one end of the elastic connecting piece away from the top surface is fixedly connected with the fixing rod.

Preferably, a fixing seat is surrounded on the outer side of the bottom surface, the fixing seat is integrally connected with the protective casing, and the lower surface of the fixing seat and the bottom surface are on the same horizontal plane.

Preferably, the fixing card slot is integrally provided on the fixing base, and the fixing card slot includes a first card and a second card that have the same structure and are oppositely established, and the first card is close to the third side surface, so The second card is close to the fourth side, the first card and the second card both include a concave arc segment and an opening handle, the arc segment and the opening handle are integrally connected, and the first card There is an opening between a card and the second card.

Preferably, the opening is located at the connection between the arc segment and the opening handle, and the connection has a rounded corner, and the opening handle extends outward from the opening.

Preferably, a first U-shaped rod is connected between the opening handles of the two first cards, and a second U-shaped rod is connected between the opening handles of the two second cards.

Preferably, the puncture needle includes a needle head end and a needle tail end, the needle head end is located below the needle base and points to the bottom surface, the needle tail end is located above the needle base, and the needle tail end is fixedly connected There is an infusion tube, the infusion tube is communicated with the puncture needle, and the infusion tube is integrally connected with the fixing rod.

Preferably, the tail end of the needle is L-shaped, and the tail end of the needle is parallel to the needle seat.

Preferably, the needle end is bent toward the needle tail end, and the bending angle is less than 30 degrees.

Preferably, an annular buffer is glued below the needle seat.

Preferably, the sum of the unstretched length of the elastic connector and the length of the puncture needle assembly is less than the depth inside the protective housing.

Compared with the prior art, the beneficial effects of the utility model are: after the infusion is completed, the fixing slot is opened outward, the puncture needle assembly rebounds, and the puncture needle is pulled out, which is convenient for pulling out the puncture needle, saves time and labor, and uses The protective shell can effectively protect the medical staff from being punctured by the puncture needle, effectively avoid the occurrence of infection, and greatly improve the safety of needle withdrawal in the infusion port; when not in use, the puncture needle is located in the protective shell, which can prevent Needle stick injury The puncture needle will cause accidental injury when taking it; in addition, when puncturing, the protective casing can be used to cover the top of the infusion port, and then push down the fixed rod to perform the puncture operation until the fixed rod is clamped in the fixed slot. After the puncture is completed, the fixed rod can also be pushed down and installed in the fixed groove before puncturing. The operation is flexible and convenient. The former puncturing method is more convenient for positioning and avoids the novice puncturing by mistake. The latter method is more convenient. It is convenient to choose the puncture position arbitrarily.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an improved special puncture needle for an infusion port according to the present invention.

FIG. 2 is a left side view of an improved special puncture needle for an infusion port according to the present invention.

FIG. 3 is a schematic structural diagram of the fixing groove of an improved special puncture needle for an infusion port according to the present invention.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present utility model, the following detailed descriptions are given in conjunction with the embodiments.

Please refer to Fig. 1 and Fig. 2 in conjunction, Fig. 1 is a schematic diagram of the overall structure of an improved special puncture needle for an infusion port of the present invention, and Fig. 2 is a left side view of an improved special puncture needle for an infusion port of the present invention, FIG. 3 is a schematic structural diagram of the fixing groove of an improved special puncture needle for an infusion port according to the present invention.

As shown in FIG. 1, an improved special puncture needle for an infusion port according to an embodiment of the present invention includes a protective casing 1, an elastic connector 2 and a puncture needle assembly 3, and the puncture needle assembly 3 and the elastic connector 2 are located in the protective In the housing 1 , both ends of the elastic connector 2 are fixedly connected to the protective housing 1 and the puncture needle assembly 3 respectively. In one embodiment, the elastic connecting member 2 is preferably a spring with good elasticity and return performance. One end of the spring is fixedly connected to the top end of the protective casing 1 , and the other end of the spring is fixedly connected to the upper surface of the puncture needle assembly 3 .

As shown in FIG. 1 and FIG. 2 , the protective casing 1 includes a first side surface 11 and a second side surface 12 opposite, a third side surface 13 and a fourth side surface 14 opposite, a top surface 15 and a bottom surface 16; The side 13 and the fourth side 14 are closed, the bottom 16 is open, and the diameter of the bottom 16 is smaller than the outer diameter of the general infusion port to ensure that the protective shell 1 can be completely pressed above the infusion port; the upper edge of the first side 11 and the second side 12 A window 17 is correspondingly opened in the vertical direction. The outer side of one end of the window 17 close to the bottom surface 16 is provided with a fixed slot 4 that can be opened and closed to both sides of the window 17. The fixed slot 4 is integrally connected with the protective shell 1 and located at the Protect the outer side of the casing 1; one end of the elastic connector 2 is fixed on the top surface 15. The fixed card slot 4 is a plastic card with certain deformability and reset performance.

As shown in FIG. 1 and FIG. 2 , the puncture needle 32 assembly 3 includes a needle seat 31 and a puncture needle 32 fixed on the needle seat 31. A fixing rod 33 is integrally connected above the needle seat 31, and the fixing rod 33 is cylindrical. It is easy to be inserted into the fixing slot 4, the fixing rod 33 is wrapped around the outer side of the end of the puncture needle 32 located above the needle seat 31, and the two ends of the fixing rod 33 respectively penetrate the openings 17 on the first side 11 and the second side 12. , one end of the elastic connecting piece 2 away from the top surface 15 is fixedly connected with the fixing rod 33 .

In one embodiment, the fixing rod 33 is integrally connected with the needle seat 31, and the puncture needle 32 is inserted into the needle seat 31. The movement of the fixing rod 33 drives the needle seat 31 to move, and the movement of the needle seat 31 drives the puncture needle 32 to move. When the fixing rod 33 moves up and down in the window 17, the puncture needle 32 also moves up and down accordingly. Therefore, when the fixing rod 33 is pushed to the bottom of the window 17 and clamped in the fixing slot 4, the puncture needle 32 will move up and down accordingly. The longest length of the needle 32 is exposed. At this time, the puncture needle 32 can be punctured. Since the silicone diaphragm of the infusion port has a large resistance, in order to prevent the fixing rod 33 from falling out of the fixing groove 4 due to resistance, the fixing rod 33 is held by the hand. The puncture at both ends can ensure the puncture effect and ensure that the puncture needle 32 reaches the predetermined puncture position. Alternatively, the protective shell 1 can be directly illuminated on the top of the infusion port and fixed, and then the fixing rod 33 is pushed down by fingers until the fixing rod 33 is clamped in the fixing slot 4 to complete the puncture. After the puncture is completed, the spring is always in a stretched state, which has a certain elastic force, and the fixing rod 33 is clamped by the fixing slot 4 to prevent the puncture needle assembly 3 from being reset under the action of the elastic force of the spring, so as to ensure that during the infusion or injection process, the puncture Stability of needle 32 position. After the infusion or injection is completed, open the fixing grooves 4 to both sides, release the fixing rod 33, and make the puncture needle assembly 3 rebound under the action of the spring restoring force. During this process, press the protective casing 1 and use the protective casing 1 Press the infusion port to avoid pulling the infusion port and the patient's skin. When the fixing rod 33 is reset to the upper end of the window 17, the puncture needle 32 is completely pulled out, and the protective casing 1 can be removed. In one embodiment, the resilience of the spring is greater than the resistance of the silicone diaphragm of the infusion port to ensure that the puncture needle 32 can be directly pulled out by the spring force; at the same time, the spring force of the spring is less than the tension force fixed by the fixing slot 4 to ensure that the puncture needle 32 is clamped on the fixing rod 33 . When installed in the fixed slot 4, it will not be pulled out by the spring.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , preferably, the bottom surface 16 is surrounded by a fixing base 18 , the fixing base 18 is integrally connected with the protective casing 1 , and the lower surface of the fixing base 18 and the bottom surface 16 are on the same level. The arrangement of the fixing seat 18 facilitates the fixing of the protective shell 1 and at the same time improves the stability of the entire protective shell 1 when it is fixed on the patient.

As shown in FIG. 2 and FIG. 3 , preferably, the fixed card slot 4 is integrally provided on the fixed base 18 , and the fixed card slot 4 includes a first card 41 and a second card 42 with the same structure and opposite to each other, and the first card 41 is close to The third side 13, the second card 42 is close to the fourth side 14, the first card 41 and the second card 42 both include a concave arc segment 43 and an opening handle 44, the arc segment 43 and the opening handle 44 are integrally connected, the first There is an opening 45 between the first card 41 and the second card 42 . The setting of the first card 41 and the second card 42 facilitates the separation of the fixing slot 4 to both sides, thereby facilitating the insertion of the fixing rod 33 . Open to both sides until the width of the opening 45 is greater than or equal to the diameter of the fixing rod 33, the fixing rod 33 slides into the fixing slot 4, and after the fixing rod 33 enters the fixing slot 4, the opening 45 is reset to the original position, thereby The fixing rod 33 is stuck to prevent loosening; the setting of the arc segment 43 is convenient for the fixing rod 33 to be stuck into the fixing slot 4, and the fixing rod 33 is wrapped to prevent the fixing rod 33 from loosening; the setting of the open handle 44 is used for When the fixing rod 33 needs to be released, press to both sides to open the arc segment 43 to both sides until the width of the opening 45 is larger than the diameter of the fixing rod 33, and the fixing rod 33 is pulled from the fixing slot 4 under the action of the spring tension Pulled out and reset to the initial position, the fixed rod 33 drives the needle seat 31 and the puncture needle 32 to reset to the position when not punctured together.

As shown in FIG. 3 , preferably, the opening 45 is located at the connection between the arc segment 43 and the opening handle 44 , and the connection has rounded corners 46 , which is convenient for the first card 41 and the second card 42 to move to both sides when the fixing rod 33 is pressed down. Open, reduce the resistance of pressing down, reduce the opening angle of the first card 41 and the second card 42, and protect the reset performance of the fixed card slot 4; the opening handle 44 extends outward from the opening 45, which is convenient for medical staff to operate , press to the sides.

As shown in FIGS. 1 and 3 , preferably, a first U-shaped rod 47 is connected between the opening handles 44 of the two first cards 41 , and a second U-shaped rod 47 is connected between the opening handles 44 of the two second cards 42 . shaped rod 48. The arrangement of the first U-shaped rod 47 and the second U-shaped rod 48 makes the two opening handles 44 on the same side of the window 17 connect together, so that the medical staff does not need to open the two fixing slots 4 respectively, but only needs to press the U-shaped rod. The two snap-opening handles on the same side can be pressed to the outside at the same time. In this way, the medical staff directly presses the first U-shaped rod 47 and the second U-shaped rod 48 after the injection or infusion is completed. The opening of the fixing slots 4 at both ends releases the fixing rod 33, and the puncture needle 32 can be pulled out from the hair, which saves time and effort and improves the operation comfort while ensuring safety.

As shown in FIGS. 1 and 2 , preferably, the puncture needle 32 includes a needle end 321 and a needle tail end 322, the needle end 321 is located below the needle seat 31 and points to the bottom surface 16, the needle tail end 322 is located above the needle seat 31, and the needle tail An infusion tube 34 is fixedly connected to the end 322 , the infusion tube 34 communicates with the puncture needle 32 , and the infusion tube 34 is integrally connected with the fixing rod 33 . The needle tail end 322 and the infusion tube 34 are both located in the fixed rod 33, and the infusion tube 34 is integrally connected with the fixed rod 33. The fixed rod 33 has a certain structural strength, which can ensure the stability of the connection between the needle tail end 322 and the infusion tube 34, and at the same time Guaranteed sealing performance.

As shown in FIG. 1 , preferably, the needle tail end 322 is L-shaped, and the needle tail end 322 is parallel to the needle seat 31 . The L-shaped needle tail end 322 is more convenient to connect with the infusion tube 34 and facilitate the connection of the fixing rod 33 to the needle seat 31 and the puncture needle 32 .

As shown in FIG. 1, preferably, the needle end 321 is bent toward the needle tail end 322, and the bending angle is less than 30 degrees. The bent needle end 321 can facilitate the recovery of the silicone diaphragm after puncture, and can effectively protect the silicone The diaphragm can avoid repeated puncturing at the same position. When the puncture needle 32 is arbitrarily changed to an angle, the position of the perforation through which the silicone diaphragm is pierced will be different, thereby improving the service life of the infusion port.

As shown in FIG. 1 and FIG. 2 , preferably, an annular buffer pad 35 is glued below the needle seat 31 , which plays a role of buffer isolation between the needle seat 31 and the patient's skin, and improves the comfort of the patient.

As shown in FIG. 1 , preferably, the sum of the unstretched length of the elastic connector 2 and the length of the puncture needle 32 assembly 3 is less than the depth in the protective casing 1 . It is ensured that when the puncture needle 32 is not in use, the entire assembly 3 of the puncture needle 32 is located in the protective casing 1 to prevent the needle end 321 from being exposed and causing accidental puncture injury. Furthermore, the puncture needle 32 can be covered with a protective sleeve to protect the needle end 321 and prevent the medical staff from being stabbed.

From the above, an improved special puncture needle for an infusion port of the present utility model, after the infusion is completed, the fixing groove is opened outward, the puncture needle assembly rebounds, and the puncture needle is pulled out, which is convenient to pull out the puncture needle and saves money. Time-saving and labor-saving, the use of the protective shell can effectively protect the medical staff, avoid being punctured by the puncture needle, effectively avoid the occurrence of infection, and greatly improve the safety of needle withdrawal in the infusion port; when not in use, the puncture needle is located in the protective shell. In addition, when puncturing, the protective shell can be used to cover the top of the infusion port, and then push down the fixed rod to perform puncture operation until the fixed rod is installed. In the fixed groove, the puncture is completed, or the fixed rod can be pushed down and installed in the fixed groove before puncturing. The operation is flexible and convenient. One way is more convenient to arbitrarily select the puncture position.

The present invention has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples of implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present utility model belong to the scope of patent protection of the present utility model.

Claims (10)

1. A special puncture needle for an improved infusion port is characterized in that: comprising a protective casing, an elastic connector and a puncture needle assembly, the puncture needle assembly and the elastic connector are all located in the protective casing, and the elastic Both ends of the connector are respectively fixedly connected to the protective casing and the puncture needle assembly; The protective casing includes opposite first and second sides, opposite third and fourth sides, a top and a bottom; the top, the third and the fourth are closed, and the The bottom surface is open; the first side surface and the second side surface are respectively provided with opening windows along the vertical direction, and the outer side of the bottom end of the opening window is provided with a fixing card that can be opened and closed to both sides of the opening window a slot, the fixing slot is integrally connected with the protective casing and is located on the outer side of the protective casing; one end of the elastic connecting piece is fixed on the top surface; The puncture needle assembly includes a needle seat and a puncture needle fixedly penetrated on the needle seat, a fixing rod is integrally connected above the needle seat, and the fixing rod is wrapped around the puncture needle located above the needle seat. On the outer side of one end, the two ends of the fixing rod respectively pass through the openings on the first side surface and the second side surface, and one end of the elastic connecting piece away from the top surface is fixedly connected with the fixing rod. 2 . The improved puncture needle for infusion port according to claim 1 , wherein a fixing seat is surrounded on the outer side of the bottom surface, the fixing seat is integrally connected with the protective shell, and the lower surface of the fixing seat is connected to the protective shell. 3 . The bottom surfaces are on the same level. 3 . The improved puncture needle for infusion port according to claim 2 , wherein the fixing slot is integrally formed on the fixing seat, and the fixing slot comprises a first card with the same structure and oppositely established. 4 . and a second card, the first card is close to the third side, the second card is close to the fourth side, and both the first card and the second card include a concave arc segment and an open A handle, the arc segment is integrally connected with the opening handle, and an opening is formed between the first card and the second card. 4. The improved puncture needle for infusion port according to claim 3, wherein the opening is located at the connection between the arc segment and the opening handle, and the connection has a rounded corner, and the opening handle extends from The opening extends outward. 5. The improved special puncture needle for an infusion port as claimed in claim 3, wherein a first U-shaped rod is connected between the opening handles of the two first cards, and the opening handles of the two second cards are A second U-shaped rod is connected between the handles. 6. The improved special puncture needle for an infusion port according to claim 1, wherein the puncture needle comprises a needle end and a needle tail end, the needle end is located below the needle seat and points to the bottom surface, so The tail end of the needle is located above the needle seat, the tail end of the needle is fixedly connected with an infusion tube, the infusion tube is communicated with the puncture needle, and the infusion tube is integrally connected with the fixing rod. 7 . The improved puncture needle for infusion port according to claim 6 , wherein the tail end of the needle is L-shaped, and the tail end of the needle is parallel to the needle seat. 8 . 8 . The improved puncture needle for infusion port according to claim 6 , wherein the tip end of the needle is bent toward the tail end of the needle, and the bending angle is less than 30 degrees. 9 . 9 . The improved special puncture needle for an infusion port according to claim 1 , wherein an annular buffer is glued below the needle seat. 10 . 10 . The improved puncture needle for infusion port according to claim 1 , wherein the sum of the unstretched length of the elastic connector and the length of the puncture needle assembly is less than the depth in the protective housing. 11 .

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