CN215460852U

CN215460852U - Central venous catheter

Info

Publication number: CN215460852U
Application number: CN202121188841.1U
Authority: CN
Inventors: 俞旭华; 尚明建
Original assignee: Purecath Medical Shanghai Co ltd
Current assignee: Purecath Medical Shanghai Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-01-11
Anticipated expiration: 2031-05-31

Abstract

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a central venous catheter is related to, it includes the venous pipe, connecting seat and epitaxial tube, venous pipe and epitaxial tube establish respectively at the both ends of connecting seat, venous pipe and epitaxial tube are linked together, the one end that the connecting seat was kept away from to the venous pipe is equipped with sharp-end soft head, be equipped with temperature measuring device on the venous pipe, temperature measuring device includes temperature probe temperature measurement joint, during the inner space of venous pipe was stretched into to temperature probe's one end, temperature measurement joint passes through the wire electricity with temperature probe and is connected. The present application has the following effects: be linked together the vena cava with patient's superior vena cava through the soft head of pointed end, be linked together central venous line and monitor through temperature probe, temperature probe can detect the temperature signal of blood in the vena cava, and temperature probe transmits temperature signal to monitor, and the monitor demonstrates after handling temperature signal to reacing patient's superior vena cava's core temperature.

Description

Central venous catheter

Technical Field

The application relates to the technical field of medical equipment, in particular to a central venous catheter.

Background

The central venous catheter belongs to one kind of intravascular tube and is mainly used for transfusion, venous manometry, venous nutrition therapy, drainage and other clinical medical conditions.

Chinese patent application No. 201810463764.2 discloses a central venous catheter, which comprises a main catheter, at least one branch catheter and at least one extension catheter; at least one channel extending along the axial direction of the main catheter is arranged in the main catheter; the outlet end of any branch pipe is communicated with a channel, and the inlet end of any branch pipe is communicated with an extension pipe; the inlet end of the branch pipe is provided with a branch connector, and the outlet end of the extension pipe is provided with an outer connector matched with the branch connector; the branch pipe and the extension pipe can be conducted, plugged or separated by adjusting the branch connector and the outer connector.

To the correlation technique among the above-mentioned, the inventor thinks that when using above-mentioned central venous catheter to be used for blood sampling work, medical personnel all measure patient's body surface temperature with the help of other temperature measuring device usually, can't directly measure and monitor patient's superior vena cava core temperature to lead to medical personnel in time to obtain the important information of patient vital sign, influence diagnostic effect.

SUMMERY OF THE UTILITY MODEL

In order to enable the central venous catheter to measure the temperature of the core of the superior vena cava, the application provides a central venous catheter.

The central venous catheter adopts the following technical scheme:

the utility model provides a central venous catheter, includes venous pipe, connecting seat and epitaxial tube, venous pipe and epitaxial tube establish respectively at the both ends of connecting seat, and venous pipe and epitaxial tube are linked together, the one end that the connecting seat was kept away from to the venous pipe is equipped with sharp-end soft head, be equipped with temperature measuring device on the venous pipe, temperature measuring device includes temperature probe temperature measurement joint, in the inner space of venous pipe was stretched into to the one end of temperature measuring probe, the temperature measurement joint passes through the wire electricity with temperature measuring probe and is connected.

Through adopting above-mentioned technical scheme, be linked together vein pipe and patient's superior vena cava through the soft head of point end, be linked together central vein pipeline and monitor through temperature probe, temperature probe can detect the temperature signal of blood in the vein, and temperature probe transmits temperature signal to monitor, and the monitor is handled the back demonstration to temperature signal to reacing patient's superior vena cava's core temperature.

Optionally, one side of connecting seat is equipped with heavy groove, the tank bottom of heavy groove is equipped with the scarf joint groove, the battery is established in the scarf joint inslot, the tank bottom of heavy groove is equipped with the pillar along the outer edge in scarf joint groove, treater and display are established on the pillar along the direction that is close to the battery in proper order, treater and display all can dismantle with the pillar and be connected.

Through adopting above-mentioned technical scheme, after long-term the use, can take out treater and display from heavy inslot to carry out quick replacement to the battery, so that central venous catheter can realize normal temperature measurement function.

Optionally, a lead electrically connected with the processor and the thermometer probe is fixed on the outer side wall of the intravenous tube.

Through adopting above-mentioned technical scheme, the line of walking of wire sets up along with the extending direction of venous pipe to be difficult for between wire and the venous pipe knotting, security when having improved central vein and using.

Optionally, the venous tube is provided with a cladding tube at the fixed connection position of the temperature measuring probe, the cladding tube is communicated with the venous tube and sleeved outside the temperature measuring probe, and a clamping ring is sleeved outside the cladding tube and clamps and fixes the cladding tube on the temperature measuring probe.

By adopting the technical scheme, the cladding pipe enhances the connection effect between the venous pipe and the temperature probe, and the clamping ring enables the temperature probe and the cladding pipe not to be separated easily.

Optionally, a sealing ring is arranged between the temperature probe and the cladding tube, and the sealing ring is arranged between the clamping ring and one end of the temperature probe extending into the venous tube.

By adopting the technical scheme, the sealing ring is used for enhancing the air tightness of the fixed connection part of the temperature measuring probe and the cladding pipe, so that the temperature measuring probe is not easy to cause blood leakage in the venous pipe.

Optionally, the connecting seat is provided with ear bands along two axial sides of the venous tube and the extension tube.

Through adopting above-mentioned technical scheme, the outline that patient's organism can be followed to the ear area is laminated mutually with patient's organism, is aided with the sticky tape simultaneously and bonds the ear area fixedly, can be so that the connecting seat is fixed on patient's organism to make central venous catheter difficult for producing at will when using and rock.

Optionally, a lightening hole is arranged on the ear strap.

By adopting the technical scheme, the weight-reducing holes can reduce the weight of the ear belt, so that the overall mass of the central venous catheter is reduced.

Optionally, the extension tube is sleeved with a shaft sleeve seat, and the shaft sleeve seat is provided with lug plates along two axial sides of the extension tube.

Through adopting above-mentioned technical scheme, can fix the otic placode bonding on patient's organism through the sticky tape to avoid the epitaxial tube to wind at will and put and cause epitaxial tube and all the other article to produce the hook phenomenon, the security when having strengthened the use.

Optionally, a guide tube clamping piece is sleeved on the epitaxial tube, the guide tube clamping piece is provided with a through hole for the epitaxial tube to pass through and a clamping groove for the epitaxial tube to be clamped, and the through hole is communicated with the clamping groove.

Through adopting above-mentioned technical scheme, make blood normal circulation when the epitaxial tube is located the perforation, make the circulation of blood blocked when the epitaxial tube is located the draw-in groove, through placing the epitaxial tube in the different positions of pipe clamping piece, can reach the purpose of controlling the circulation of blood.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the venous catheter is communicated with the superior vena cava of a patient through the tip soft head, the central venous catheter is communicated with the monitor through the temperature probe, the temperature probe can detect a temperature signal of blood in the venous catheter, the temperature probe transmits the temperature signal to the monitor, and the monitor processes and displays the temperature signal so as to obtain the core temperature of the superior vena cava of the patient;

2. the routing of wire sets up along with the extending direction of venous pipe to be difficult for between wire and the venous pipe knotting, security when having improved central vein and using.

Drawings

FIG. 1 is a schematic overall structure diagram of a cardiac venous catheter in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an epitaxial tube in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a connecting socket according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of an intravenous tube in an embodiment of the present application;

fig. 5 is a schematic structural diagram of an intravenous tube in an embodiment of the present application.

Description of reference numerals: 1. an intravenous tube; 11. a tip end soft head; 12. a cladding tube; 13. a seal ring; 2. a connecting seat; 21. an ear band; 211. lightening holes; 3. an extension tube; 4. a temperature measuring device; 41. a temperature measuring probe; 42. a temperature measuring joint; 43. a wire; 5. a catheter clip; 51. perforating; 52. a card slot; 6. a shaft sleeve seat; 61. an ear plate; 7. a clamping ring; 71. and (6) supporting the ear.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a central venous catheter. Referring to fig. 1, the central venous catheter includes an intravenous tube 1, a connection hub 2, an extension tube 3, and a temperature measuring device 4.

Venous line 1 and epitaxial tube 3 are the flexible hose, and venous line 1 and epitaxial tube 3 are fixed respectively at the both ends of connecting seat 2. The intravenous tubes 1 are all in communication with the epitaxial tube 3. The end of the venous tube 1 far away from the connecting seat 2 is provided with a soft tip 11, and the soft tip 11 is used for communicating the venous tube 1 with the superior vena cava of a patient and enabling blood of the superior vena cava of the patient to flow into the venous tube 1 and the epitaxial tube 3. Temperature measuring device 4 establishes on venous line 1 and connecting seat 2, and temperature measuring device 4 is used for carrying out temperature measurement to the blood in the venous line 1 to obtain the core temperature of patient's vena cava, thereby supplementary medical personnel diagnose the patient.

Venous line 1 and epitaxial tube 3 all can adopt the polyurethane material to make, and epitaxial tube 3 can set up to one, two or three on connecting seat 2 to satisfy multiple clinical treatment demand. The central venous catheter for blood sampling is provided with three extension tubes 3. And the central venous catheter can be packaged with other matched facilities, such as a disposable scalpel, gauze and the like to form a treatment suit, so that the central venous catheter is more convenient and faster in the use process of clinical treatment.

Referring to fig. 1 and 2, a catheter clip 5 is sleeved on the epitaxial tube 3. The catheter clip 5 may be made of PC material, and the catheter clip 5 has a rectangular plate shape. The catheter clip 5 is provided with a through hole 51 and a catching groove 52 communicating with each other. The diameter of the through hole 51 is larger than the width of the clamping groove 52, and the communication part of the through hole 51 and the clamping groove 52 is in smooth transition. The perforation 51 is used for the extension tube 3 to pass through so as to make the blood flow normally; the clamping groove 52 is used for clamping the extension tube 3, so that the blood circulation is blocked. The aim of controlling the blood circulation can be achieved by placing the extension tube 3 at different positions of the catheter clamping piece 5.

The extension tube 3 is sleeved with a shaft sleeve seat 6. Shaft sleeve seat 6 and pipe clamping piece 5 set gradually along the direction that is close to connecting seat 2, and shaft sleeve seat 6 is the pipe form, can adopt interference fit's mode between shaft sleeve seat 6 and the epitaxial tube 3 to make shaft sleeve seat 6 be difficult for sliding at will on epitaxial tube 3. The two axial sides of the shaft sleeve seat 6 along the extension tube 3 are both fixed with lug plates 61, one end of each lug plate 61 close to the shaft sleeve seat 6 is rectangular, and one end of each lug plate 61 far away from the shaft sleeve seat 6 is semicircular. When the central venous catheter is used, the ear plate 61 can be adhered and fixed on the body of a patient through the adhesive tape, so that the phenomenon that the extension tube 3 is hooked with the rest products due to the random winding of the extension tube 3 is avoided, and the safety in use is enhanced.

Referring to fig. 3, the connection holder 2 can also be made of PC material, and the connection holder 2 is provided with different inner cavities according to the number of the extension tubes 3, so as to meet the requirement of communicating the extension tubes 3 with the venous tube 1. The connecting base 2 may be a cylinder with a circular, rectangular or other regular polygon cross section.

Ear belts 21 are fixed on two sides of the connecting seat 2 along the axial direction of the venous tube 1 and the epitaxial tube 3. The ear belt 21 can be made of flexible materials such as compound rubber, and the ear belt 21 can be uniformly provided with lightening holes 211 so as to lighten the whole mass of the central venous catheter. Ear belt 21 can be laminated with patient's organism along patient's organism's outline mutually, is assisted with the sticky tape simultaneously and bonds ear belt 21 fixedly, can be so that connecting seat 2 is fixed on patient's organism to it rocks to be difficult for producing at will when using to make central venous catheter.

Referring to fig. 3 and 4, the temperature measuring device 4 includes a temperature measuring probe 41 and a temperature measuring joint 42. One end of the temperature probe 41 extends into the inner space of the venous tube 1, a cladding tube 12 is arranged at the fixed connection position of the temperature probe 41 of the venous tube 1, the cladding tube 12 and the venous tube 1 are of an integral structure, and the cladding tube 12 is communicated with the venous tube 1. The cladding tube 12 is sleeved outside the temperature measuring probe 41. A sealing ring 13 is arranged between the temperature measuring probe 41 and the cladding pipe 12. The sealing ring 13 can be made of composite rubber material, and the sealing ring 13 is clamped and fixed with the cladding pipe 12 through the temperature measuring probe 41. The sealing ring 13 is used for enhancing the air tightness of the fixed connection part of the temperature probe 41 and the cladding tube 12, so that the fixed arrangement of the temperature probe 41 is not easy to cause the blood leakage in the venous tube 1.

Meanwhile, referring to fig. 4 and 5, a clamping ring 7 is arranged outside the cladding pipe 12, the clamping ring 7 is a metal circular ring provided with an opening, and the opening end of the clamping ring 7 has elastic deformation capacity. The open end of the clamping ring 7 is provided with a lug 71, and the lug 71 is formed by extending the open end of the clamping ring 7 in a direction away from the center of the clamping ring 7. The open ends of the clamp ring 7 can be driven to deform in the direction away from each other by means of a tool such as an open ended wrench, so that the inner diameter of the clamp ring 7 is increased, and the clamp ring 7 is sleeved on the cladding pipe 12 in a labor-saving manner. The cladding pipe 12 is clamped and fixed on the temperature measuring probe 41 by the clamping ring 7, so that the temperature measuring probe 41 and the cladding pipe 12 are not easy to separate. The sealing ring 13 is arranged between the clamping ring 7 and one end of the temperature probe 41 extending into the venous pipe 1.

Referring to fig. 3 and 4, the temperature probe 41 is electrically connected to the processor 42 through a wire 43, and the connecting wire 43 includes a wire for signal transmission and an insulating layer coated outside the wire. The insulating layer of connecting wire 43 is fixedly connected with the lateral wall of venous pipe 1, and the line of walking of wire 43 sets up along with the extending direction of venous pipe 1 to be difficult for knotting between wire 43 and the venous pipe 1, thereby the security when further having improved central vein and using.

The temperature measuring connector 42 is communicated with a monitor, and a connecting connector matched with the temperature measuring probe is arranged on the monitor. The temperature measuring connector 42 is used for transmitting the temperature signal of the temperature measuring probe 41 to the monitor. The monitor processes the temperature signal, displays the processed signal and finally obtains the core temperature of the superior vena cava of the patient.

The implementation principle of the central venous catheter in the embodiment of the application is as follows: during the use, be linked together vein pipe 1 and patient's superior vena cava through sharp-end soft head 11, be linked together central venous catheter and monitor through temperature measurement joint 42, then control the actual break-make of extension pipe 3 through pipe clamping piece 5, use the sticky tape again to bond ear area 21 and fix on patient's organism to realize the fixed of connecting seat 2, then use the sticky tape to bond ear plate 61 and fix on patient's organism, so that extension pipe 3 is difficult for winding around at will. During the temperature measurement, temperature probe 41 can detect the temperature signal of blood in the venous line 1, and temperature probe 41 passes through wire 43 and transmits temperature signal to the monitor, and the monitor is demonstrateed after handling temperature signal to reacing the core temperature of patient's vena cava.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a central venous catheter, includes venous line (1), connecting seat (2) and epitaxial tube (3), establish respectively at the both ends of connecting seat (2) venous line (1) and epitaxial tube (3), venous line (1) is linked together with epitaxial tube (3), the one end that connecting seat (2) were kept away from in venous line (1) is equipped with sharp-end soft head (11), its characterized in that: the temperature measuring device (4) is arranged on the venous tube (1), the temperature measuring device (4) comprises a temperature measuring probe (41) and a temperature measuring connector (42), one end of the temperature measuring probe (41) extends into the inner space of the venous tube (1), and the temperature measuring connector (42) is electrically connected with the temperature measuring probe (41) through a lead (43).

2. A central venous catheter as claimed in claim 1 wherein: the lead (43) is fixed on the outer side wall of the venous tube (1).

3. A central venous catheter as claimed in claim 1 wherein: the venous catheter is characterized in that a cladding tube (12) is arranged at the fixed connection position of the temperature measuring probe (41) of the venous catheter (1), the cladding tube (12) is communicated with the venous catheter (1) and sleeved outside the temperature measuring probe (41), a clamping ring (7) is sleeved outside the cladding tube (12), and the cladding tube (12) is clamped and fixed on the temperature measuring probe (41) through the clamping ring (7).

4. A central venous catheter as claimed in claim 3 wherein: a sealing ring (13) is arranged between the temperature measuring probe (41) and the cladding pipe (12), and the sealing ring (13) is arranged between the clamping ring (7) and one end of the temperature measuring probe (41) extending into the venous pipe (1).

5. A central venous catheter as claimed in claim 1 wherein: ear bands (21) are arranged on the two axial sides of the connecting seat (2) along the venous tube (1) and the extension tube (3).

6. A central venous catheter as claimed in claim 5, characterised in that: the ear belt (21) is provided with a lightening hole (211).

7. A central venous catheter as claimed in claim 1 wherein: the extension pipe (3) is sleeved with a shaft sleeve seat (6), and lug plates (61) are arranged on the shaft sleeve seat (6) along two axial sides of the extension pipe (3).

8. A central venous catheter as claimed in claim 1 wherein: the pipe clamping piece (5) is sleeved on the extension pipe (3), the pipe clamping piece (5) is provided with a through hole (51) for the extension pipe (3) to pass through and a clamping groove (52) for the extension pipe (3) to be clamped, and the through hole (51) is communicated with the clamping groove (52).