WO2014047889A1

WO2014047889A1 - Soft tube detaining infusion apparatus with combined and connected tube-needle

Info

Publication number: WO2014047889A1
Application number: PCT/CN2012/082356
Authority: WO
Inventors: 张建铭
Original assignee: Zhang Jianming
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2014-04-03
Also published as: CN103857424A; CN103857424B

Abstract

Disclosed is a soft tube detaining infusion apparatus with combined and connected tube-needle, comprising a puncture outfit (1), a connecting pipe (2) and a back-end component. The puncture outfit (1) is a sleeved puncture outfit, comprising a soft tube (13), a soft tube base (15), a sealing element (14), a puncture needle tube (11), a needle base (12) and an operating handle (17). The soft tube (13) becomes soft in blood vessels due to the effect of body temperature, therefore, the limbs of patients can move flexibly after the tube is installed, meanwhile the end part of the softened soft tube (13) ensures comfortable infusion treatment for the patient. After infusion, the needle is drawn back into the front end of the soft tube base (15) after the detained soft tube (13) is pulled out, which is very convenient and safe for the following treatment of medical waste. The infusion apparatus can be used for direct infusion, which makes infusion faster and easier. The infusion apparatus combines a puncture needle tube and an infusion needle tube of the prior art into one piece, which simplifies the structure. More importantly, since the puncture needle tube (11), the soft tube (13) and the back-end component can be fixed together as one piece, the infusion apparatus can be produced in one piece and used in one piece, and the disposable use thereof is ensured.

Description

Needle-and-tube type indwelling infusion set

Summary of the invention

Technical field

The invention relates to a medical infusion device, in particular to a needle-and-tube type indwelling infusion set.

Background technique

An infusion set in the prior art is shown in the figure 1 , which is composed of a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion hose 4, a liquid flow regulator 5, a drip bucket 6, a bottle end connecting tube 7, The bottle stopper 8 and the ventilator 9 are composed. The puncture device 1 is composed of a certain length of hard needle tube and an operating handle. When infusion, the medical staff usually sends the whole needle tube into the patient's blood vessel, and then the puncture device is fixed on the human skin by using tape or applicator, so as to avoid The needle is detached or deviated. Because the needle tube has a certain length and is hard and straight, it is more dangerous that the needle tip is very sharp, which limits the range of movement of the pin body, and the patient's limb needs to maintain a posture for a long time, which is very uncomfortable. Otherwise, the patient's limbs often move during the infusion process, and it is easy to cause the needle tip to scratch the endometrium, causing inflammation of the blood vessels, especially the infants have no self-control ability, and are more prone to infusion complications. When the needle insertion method is severely pulled, the puncture needle tube is deviated from the fixed position, and the needle tip may pierce or scratch the blood vessel, causing complications such as bruising, redness and swelling, and the patient is suffering. After the infusion of the infusion set is completed, the puncture needle is pulled out, and the blood needle tube is unprotected and exposed, and the needle tip stabs the medical staff, which causes blood infection. Therefore, medical staff should be very careful in operation to ensure the safety of the infusion.

Summary of the invention

The object of the present invention is to overcome the deficiencies in the prior art, and to provide a needle-in-tube type indwelling infusion device which is convenient to operate, has less limb requirements for the needle patient, is convenient to use, and is not easy to cause infusion complications. .

The object of the present invention is achieved by the following route.

Needle-and-tube type indwelling infusion set, including trocar, connecting tube and rear end assembly, the main point of which is that the puncturing device is a casing puncturing device, including a hose, a hose seat, a sealing member and a puncture needle tube , the needle seat and the operating handle, the hose and the hose seat are fixed, the sealing member is placed in the inner cavity of the hose seat, the puncture needle tube passes through the sealing member and is sleeved in the hose core, the needle tip exposes the front end portion of the hose, and the puncture The needle tube is connected with the front part of the needle seat, the rear end of the needle seat is connected with the connecting tube, and the connecting tube is connected with the rear end assembly of the infusion set. The hose seat is a cylindrical member, and the needle seat is sleeved in the inner cavity thereof. The side of the hose seat extends axially with a sliding groove, and the operating handle is fixed across the sliding groove and the needle seat to form a sliding assembly, and the corresponding portion of the operating handle can slide along the sliding groove, the sliding assembly and the hose seat There is a stop device between the back slide member that is stopped by the stop device, the puncture needle tip is still in front of the seal, and the hose core, the puncture needle core and the connecting tube die constitute an infusion channel.

In use, the hose and the puncture needle are first inserted into the blood vessel, and after seeing the blood in the connecting tube, the angle of the puncture is lowered, and the hose is pushed into the blood vessel until the whole hose enters the blood vessel, and the needle is withdrawn. Until the stop device is stopped, the hose is placed in the blood vessel, and the flow regulator in the rear end assembly is opened. The liquid medicine passes through the needle end connection tube, the retracted puncture needle tube, and then enters the patient blood vessel through the hose. In, to achieve the purpose of infusion. Because the hose is softened by the temperature of the body in the blood vessel, the patient can still flexibly move the body part of the tube, and the softened end of the hose does not damage the intima of the blood vessel, and the blood vessel is not worn. Infusion complications will not occur, providing patients with safe and comfortable infusion therapy. After the infusion, close the flow regulator and withdraw the indwelling hose. Since the needle tip has been retracted into the front end of the hose holder and is not exposed, the needle tip will not hurt the person, and it will bring great convenience and safety to the subsequent medical waste disposal. .

In this way, the indwelling of the human body by the hose is carried out, and all the insufficiency caused by the infusion of the needle in the needle body (for example, the needle of the patient with the needle is complicated, the use is inconvenient, and the infusion complications are easy to occur) At the same time, unlike the general indwelling needle, after the puncture, the puncture needle is only receded and hidden in the hose seat and is not removed therefrom, and also serves as an infusion channel for the communication hose and the connecting tube. The direct benefit of this is that it can be directly infused without the need to remove the puncture needle as in the prior art, and then insert the infusion needle for infusion, so that the infusion operation is quicker and more convenient; at the same time, the combination is a prior art The puncture needle tube and the infusion needle tube enable the puncture needle tube of the present invention to have both functions at the same time, thereby simplifying the structure; in particular, since the puncture needle tube, the hose and the rear end assembly can be fixed into one without being detached, Therefore, it can be constructed in a one-piece factory and integrated, thus creating a structural possibility to ensure the one-time use of the product.

The object of the present invention can also be achieved by the following means.

When the sliding component that slides backward is stopped by the anti-return device, the puncture needle tip is still located in the cavity of the hose seat before the seal and after the bare section of the hose.

The rear end of the hose is inserted into the hose seat, and the portion of the hose outside the hose seat is called the exposed section of the hose.

A total of two sliding grooves are symmetrically distributed on both sides of the hose seat, and two operating handles are respectively fixed to the needle holder through the sliding grooves.

The operating handle has a shape of a pinch ear, and the two latching ears fixed together with the needle seat constitute a double-kneading operating handle.

This double-pinch handle provides another convenient way to operate.

Further optimizations regarding the anti-back device are:

The anti-return device is a retreating obstacle at the end of the sliding slot. The retreating obstacle may be a click point protruding from the end of the sliding slot, or the tail end of the sliding slot may be closed.

Also included is a backstop that is mounted between the sliding member and the hose block, and the sliding member that is retracted in position will resist contact with the check device if pushed forward.

Thus, the sliding member that is retracted in position cannot be pushed forward due to the blocking of the check device. Therefore, it is ensured that the retracted puncture needle can no longer be pulled out, and the needle-in-tube indwelling infusion set according to the present invention can also be promoted. One-time use.

Such backstop devices are common in prior art needle medical devices and are mostly applicable to the present invention. The present invention provides two optimized backstop devices:

One is:

The backstop device is composed of a convex card point and a concave hole. The convex card point and the concave hole are matched and arranged on the sliding component and the hose seat. When the sliding component is retracted, the sliding component is forced to climb over the convex card point and then the convex card. The spot is trapped in the pit, thereby preventing the puncture needle from being pushed forward.

The other is:

The backstop device is composed of an elastic buckle and a card shoulder, the elastic buckle is located on the syringe, the shoulder is located on the sliding component, and the sliding component that climbs over the elastic buckle and retreats in position when the back is retracted, the shoulder is exactly elastic buckle The card is snapped to prevent the puncture needle from pushing forward.

Further optimization of the backstop device is:

The elastic buckle is composed of a elastic suspension tongue and a buckle at the top end of the tongue. The end of the sliding groove of the hose seat is hollowed out at a distance parallel to the sliding groove and is hollowed out at the end of the sliding groove and the sliding groove 'U 'The shape of the 'U' shape forms a resilient suspension tongue. The buckle is located at the top end of the elastic suspension tongue and protrudes in the sliding groove. The front side of the bayonet has a diagonal or curved shape for easy climbing. The back side of the bayonet has a pointed shape or a vertical shape that prevents climbing.

In this way, the shoulder of the sliding member can easily climb over the buckle by pressing the elastic suspension tongue by the shape of the front side of the buckle, and the shape of the rear side of the bayonet ensures that the shoulder is formed opposite to the shoulder, thereby preventing the needle from being inserted. Push.

The shoulder is located on the operating handle and is specifically shaped as a recess or as a front shoulder of the operating handle.

The hose seat is a cylindrical member, the front inner cavity is a small hole, the rear inner cavity is a large hole, and the size between the two holes is excessively tapered, and the rear end of the hose is inserted in the small hole, and includes A wedge member having a tapered bottle shape which is open at the front and rear ends and axially penetrates the split slot, and the front straight portion of the wedge member is matched with the small hole and clamped in the small hole and the hose Between the wedges, the rear cone is over-matched with the conical shape of the hose housing. The front wedge is used to tightly connect the hose to the hose seat. The wedge is either medical stainless steel or medical plastic. Made, the seal is located behind the wedge cone.

Also included is a flap that is secured to the hose block.

In summary, the present invention has the following advantages over the prior art: since the hose is softened by the body temperature in the blood vessel, the patient can still flexibly move the limb portion of the tube, and the softened hose end The Department will not damage the intima of the blood vessels, and will not pierce the blood vessels, so there will be no infusion complications and safe and comfortable infusion treatment for the patients. After the infusion is finished, the indwelling hose is removed. Since the needle tip has been retracted into the front end of the hose holder and is not exposed, the needle tip does not hurt the person, and it is extremely convenient and safe for subsequent medical waste disposal. It can be directly infused without the need to remove the puncture needle as in the prior art, and then insert the infusion needle for infusion, so that the infusion operation is quicker and more convenient; at the same time, the combination is a puncture needle and an infusion needle in the prior art. The puncture needle tube of the invention has the functions of the two at the same time, thereby simplifying the structure; in particular, since the puncture needle tube, the hose and the rear end assembly can be fixed and integrated without being detached, the whole body can be manufactured and integrated. Use to create a structural possibility to ensure the one-time use of this product.

DRAWINGS

1 is a schematic structural view of an infusion set in the prior art.

2 is a schematic view showing the structure of a needle-and-tube type indwelling infusion set according to the present invention.

Figure 3 is a schematic view showing the structure of the puncturing device in the state to be punctured according to the first embodiment of the present invention.

Figure 4 is a schematic view showing the structure of the puncture device in the first embodiment of the present invention after the puncture is completed.

Figure 5 is a schematic perspective view showing the structure of a hose holder in the first embodiment of the present invention.

Figure 6 is a schematic perspective cross-sectional view showing the structure of a hose holder in the first embodiment of the present invention.

Figure 7 is a perspective view showing the structure of a slide assembly in a three-dimensional state in the first embodiment of the present invention.

Figure 8 is a schematic perspective view showing the structure of another sliding state of the sliding assembly in the first embodiment of the present invention.

Figure 9 is a schematic view showing the structure of the puncturing device in the state to be punctured according to the second embodiment of the present invention.

Figure 10 is a schematic view showing the structure of the puncturing device in a state to be punctured in the preferred embodiment of the present invention.

Label description:

1 puncture device 11 puncture needle tube 12 needle seat 121 connecting tube boss 13 hose 14 seal 15 hose seat 151 sliding groove 152 front convex card point 153 rear convex card point 154 small hole 155 rear hole 16 wedge member 17 operating handle 18 wing 171 front pit 172 rear pit 2 connecting tube 3 liquid filter 4 infusion hose 5 liquid flow regulator 6 drip bucket 7 bottle end connecting pipe 8 bottle piercing 9 exhaust

The invention will now be described in greater detail with reference to the drawings.

detailed description

Embodiment 1:

Referring to Fig. 2, a needle-and-tube type indwelling infusion set includes a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion liquid tube 4, a liquid flow regulator 5, and a drop. The bucket 6, the bottle end connecting pipe 7, the bottle stopper 8 and the exhauster 9 are composed.

Referring to Figures 3 and 4, the trocar is a cannula puncturing device comprising a hose 13, a hose holder 15, a seal 14, a puncture needle 11, a needle hub 12 and an operating handle 17.

Referring to Figures 5 and 6, the hose base 15 is a cylindrical member having an open front and rear end. The front inner cavity is a small hole 154, and the rear inner cavity is a large hole 155. The size between the two holes is excessively stepped. A sliding groove 151 extends from the side of the hose seat 15 in the axial direction. The rear end of the sliding groove 151 protrudes forward and backward with a front convex click point 152 and a rear convex click point 153. The front and rear convex click points are integrated with the hose seat. .

Referring to Figures 7 and 8, the hub 12 is coupled to the operating handle 17 and constitutes a slide assembly. The operating handle 17 is a plate-like member, and a front and

rear recesses

171, 172 are respectively provided at the upper and lower sides thereof near the needle holder 12. A connecting tube boss 121 is formed behind the rear end of the needle holder 12.

Referring to FIG. 3 and FIG. 4, the hose 13 is inserted into the small hole 154 and fixed to the hose seat 15, and the sealing member 14 is disposed at the joint of the large and small holes. After the puncture needle 11 passes through the sealing member 14, the sleeve is softened. In the die, the tip of the needle exposes the front end portion of the hose 13, the puncture needle 11 is connected to the front portion of the needle hub 12, and the connecting tube boss 121 extending from the rear end of the needle holder 12 is connected with the connecting tube 2, and the connecting tube 2 and the infusion The rear end components are connected in a group. The needle holder 12 is sleeved in the inner cavity of the hose holder 15. The operating handle 17 is fixed to the needle holder 12 across the sliding slot 151 and constitutes a sliding assembly. The corresponding portion of the operating handle 17 can slide along the sliding slot 151, and the rear convex click point The 153 and the rear recess 172 constitute a retaining device, and when the sliding component that slides backward is stopped by the retaining device, the puncture needle tip is still located in the cavity of the hose seat before the sealing member 14 and after the exposed portion of the hose 13 Medium (as shown in Figure 4). At this time, the front convex click point 152 is also trapped in the front pit 171, and the front convex click point 152 and the front recess 171 are composed. A backstop device that prevents the sliding member that is retracted in position from pushing forward. The hose core, the puncture needle core, and the connecting tube die constitute an infusion channel.

In use, first, the hose 13 and the puncture needle 11 penetrate into the blood vessel together, and after seeing the blood in the connecting tube 2, the angle of the puncture is lowered, and the hose 13 is continuously pushed into the blood vessel until the whole hose 13 enters the blood vessel. At the same time, the needle tube 11 is withdrawn until the stop device is stopped, the hose 13 is left in the blood vessel, the flow regulator in the rear end assembly is opened, the liquid medicine is passed through the rear end of the needle holder 12, and the puncture needle is retracted. 11, through the hose 13 into the patient's blood vessels, to achieve the purpose of infusion. After the infusion is completed, the flow regulator is closed and the indwelling hose 13 is withdrawn. Since the needle tip has been retracted into the front end of the hose holder and is not exposed, the needle tip does not hurt the person.

The parts not described in this embodiment are the same as the prior art.

Embodiment 2:

Referring to Figure 2, Figure 9, A needle-and-tube type indwelling infusion set includes a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion liquid tube 4, a liquid flow regulator 5, a drip bucket 6, a bottle The end connecting pipe 7, the bottle stopper 8 and the exhauster 9 are composed. The trocar is a cannula puncturing device comprising a hose 13, a hose holder 15, a seal 14, a puncture needle 11, a needle hub 12 and an operating handle 17. The hose seat 15 is a cylindrical member, the front inner cavity is a small hole 154, the rear inner cavity is a large hole 155, and the size between the two holes is excessively tapered, and the rear end of the hose 13 is inserted in the small hole. The passage 154 further includes a wedge member 16 having a tapered bottle shape which is open at the front and rear ends and axially penetrates the split slot, and the front straight tube of the wedge member 16 matches the small hole 154 and Clamped between the small hole 154 and the hose 13, the rear cone of the wedge member 16 is excessively matched with the taper of the inner cavity of the hose seat 15, and the front top wedge member 16 softens the hose 13 The socket 15 is tightly coupled, the wedge member 16 is made of medical stainless steel or medical plastic, and the sealing member 14 is located behind the cone of the wedge member 16.

The parts not described in this embodiment are the same as those in the first embodiment.

Best embodiment:

Referring to Figures 2 and 10, A needle-and-tube type indwelling infusion set includes a puncturing device 1, a connecting tube 2 and a rear end assembly, and the rear end assembly is composed of a liquid chemical filter 3, an infusion liquid tube 4, a liquid flow regulator 5, a drip bucket 6, a bottle The end connecting pipe 7, the bottle stopper 8 and the exhauster 9 are composed. The trocar is a cannula puncturing device comprising a hose 13, a hose holder 15, a seal 14, a puncture needle 11, a needle hub 12 and an operating handle 17. The hose seat 15 is a cylindrical member, the front inner cavity is a small hole 154, the rear inner cavity is a large hole 155, and the size between the two holes is excessively tapered, and the rear end of the hose 13 is inserted in the small hole. The passage 154 further includes a wedge member 16 having a tapered bottle shape which is open at the front and rear ends and axially penetrates the split slot, and the front straight tube of the wedge member 16 matches the small hole 154 and Clamped between the small hole 154 and the hose 13, the rear cone of the wedge member 16 is excessively matched with the taper of the inner cavity of the hose seat 15, and the front top wedge member 16 softens the hose 13 The socket 15 is tightly coupled, the wedge member 16 is made of medical stainless steel or medical plastic, and the sealing member 14 is located behind the cone of the wedge member 16. A total of two sliding grooves 151 are symmetrically distributed on both sides of the hose seat 15, and two operating handles 17 are respectively fixed to the needle holder 15 corresponding to the through sliding grooves 151. The operating handle 17 is in the form of a pinch ear, and the two latching ears fixedly connected to the needle seat 15 constitute a double-kneading operating handle. Also included is a flap 18 that is secured to the hose block 15.

Claims

A needle-and-pig type indwelling infusion set comprising a trocar, a connecting tube and a rear end assembly, wherein the puncturing device is a cannula puncturing device comprising a hose, a hose seat, a sealing member, a puncture needle, The needle seat and the operating handle, the hose and the hose seat are fixed, the sealing member is disposed in the inner cavity of the hose seat, and the puncture needle tube is inserted into the hose core through the sealing member, and the needle tip exposes the front end portion of the hose, and the puncture needle tube Connected to the front of the needle hub, the rear end of the needle seat is connected with the connecting tube, and the connecting tube is connected with the rear end assembly of the infusion set. The hose seat is a cylindrical member, and the needle seat is sleeved in the inner cavity thereof. The side of the hose seat extends axially with a sliding groove, and the operating handle is fixedly connected to the needle seat through the sliding groove to form a sliding assembly, and the corresponding portion of the operating handle can slide along the sliding groove, and the sliding component and the hose seat There is a kind of anti-retraction device, and when the sliding component sliding backward is stopped by the anti-return device, the puncture needle tip is still in front of the sealing member, the hose core and the puncture needle tube The core and the connecting tube die constitute an infusion channel.
The needle-in-tube type indwelling infusion set according to claim 1, wherein when the sliding component that slides backward is stopped by the stopping device, the needle tip is still located before the sealing member and after the exposed portion of the hose The hose seat is in the inner cavity.
The needle-in-tube type indwelling infusion set according to claim 1, wherein two sliding grooves are symmetrically distributed on both sides of the hose seat, and two operating handles respectively correspond to the sliding groove and the needle. The seat is fixed.
The needle-in-tube type indwelling infusion set according to claim 3, wherein the operating handle has a shape of a pinch, and the two latching ears fixedly connected to the needle seat constitute a double-kneading operation handle. .
The needle-in-tube type indwelling infusion set according to claim 1 or 2, wherein the stopping device is a receding obstacle at the tail end of the sliding groove, and the retreating obstacle may be a protrusion The card point at the end of the sliding slot can also be closed at the end of the sliding slot.
A needle-and-tube type indwelling infusion set according to claim 1, further comprising a backstop device mounted between the sliding member and the hose seat, and a sliding member that is retracted into position Pushing backwards will prevent contact with this backstop.
The needle-in-tube type indwelling infusion device according to claim 6, wherein the backstop device is composed of a convex card point and a pit, and the convex card point and the pit are matched and arranged in the sliding component and the soft On the socket, when the sliding component is forced to climb over the convex card point by elastic deformation, the convex card point is trapped in the concave hole, thereby preventing the puncture needle from being pushed forward.
The needle-in-tube type indwelling infusion device according to claim 6, wherein the backstop device is composed of an elastic buckle and a card shoulder, and the elastic buckle is located on the syringe, and the shoulder is located on the sliding member. The sliding member that climbs over the elastic buckle and retreats in position when it retracts is engaged with the elastic buckle, thereby preventing the puncture needle from being pushed forward.
The needle-in-tube type indwelling infusion set according to claim 8, wherein the elastic buckle is composed of a elastic suspension tongue and a buckle at the top end of the tongue, and is sliding along the end of the sliding groove of the hose holder. The parallel spacing of the slots is hollowed out and the hollow is connected to the sliding slot 'U' at the end of the sliding slot. The center of the 'U' shape forms a resilient suspension tongue, and the buckle is located at the top end of the elastic suspension tongue. Protruding in the sliding groove, the front side of the bayonet has a diagonal shape or an arc shape which is easy to climb, and the rear side of the bayonet has a pointed shape or a vertical shape which prevents climbing.
The needle-and-tube type indwelling infusion set according to claim 8, wherein the shoulder is located on the operating handle, and the specific shape is either a recess or a front shoulder of the operating handle.
The needle-in-tube type indwelling infusion set according to claim 1, wherein the hose seat is a cylindrical member, the front inner cavity is a small hole, the rear inner cavity is a large hole, and the size is two. The holes are excessively tapered, and the rear end of the hose is inserted in the small hole, and further comprises a wedge member having a tapered bottle shape with a front and rear end opening and axially penetrating the split groove. The front straight tube of the tight member is matched with the small hole and clamped between the small hole and the hose, and the rear cone of the wedge member is excessively matched with the taper of the inner cavity of the hose seat, and the front top is tightly wedged The hose is tightly coupled to the hose seat, the wedge member is made of medical stainless steel or medical plastic, and the seal is located behind the wedge cone.
A needle-and-tube type indwelling infusion set according to claim 1, further comprising a dressing fixed to the hose holder.