CN205107884U - Soft electrode of dual -purpose snare type - Google Patents

Abstract

The utility model discloses a dual-purpose snare type soft electrode, which comprises a snare body. The snare body includes a plastic core rod, a metal pull rod, an outer sheath, a braided steel wire, and a steel wire snare. The metal pull rod is worn on a plastic The inner cavity of the core rod, the steel wire snare and the braided steel wire are connected to each other and then passed through the inner cavity of the outer sheath tube, the front end of the metal pull rod is connected to the rear end of the braided steel wire, and a through hole is opened in the radial direction of the plastic core rod, and the through hole is installed High-frequency electricity/argon gas access socket, the middle part of the high-frequency electricity/argon gas access socket is an argon gas inlet, and the side is a high-frequency electrical connection needle, and the argon gas inlet is connected to the plastic core rod The outer sheath tube is sealed and connected, and the high-frequency electrical connection needle is elastically connected with the metal pull rod in the plastic core rod. The utility model solves the technical problem that different instruments need to be replaced during the operation, and at the same time solves the technical problems that the operation time is prolonged, delayed, and the operation field of view is blurred by blood, thereby reducing safety.

Description

A dual-purpose snare type soft electrode

technical field

The utility model relates to a medical snare, in particular to a dual-purpose snare type soft electrode.

Background technique

Compared with traditional surgery, minimally invasive surgery has the advantages of less trauma, less bleeding, less pain and faster recovery. It is regarded as one of the development directions of surgery in the 21st century. It is the frontier of the combination of electronic display system, high-tech surgical instruments and traditional surgery. technology.

Argon gas high-frequency electric knife and its accessories are more and more popular in minimally invasive surgery in the digestive system using endoscope. However, in the operation, due to the step-by-step cutting and coagulation and the different instruments, the cutting and coagulation instruments will be replaced continuously during the operation, so that the operation time will be prolonged and delayed, and when waiting for replacement, the bleeding will increase and blur the vision of the operation area. Therefore changing apparatus can bring a lot of inconvenience.

After searching, no snare soft electrode with both cutting and coagulation functions was found.

Utility model content

The purpose of the utility model is to provide a dual-purpose snare-type soft electrode, which solves the technical problem that different instruments need to be replaced in one operation during minimally invasive surgery, and at the same time solves the problem of prolonged operation time, delay, and blurred surgical field of view by blood, thereby The technical problem of safety is reduced, and the utilization rate of equipment is reduced at the same time, and the cost is saved.

In order to achieve the above purpose, the utility model adopts the following technical scheme, a dual-purpose snare type soft electrode, including a snare body, the snare body includes a plastic core rod, a metal pull rod, an outer sheath tube, a braided steel wire, a steel wire Snare, the metal pull rod is passed through the inner cavity of the plastic core rod, the steel wire snare and the braided steel wire are connected to each other and passed through the inner cavity of the outer sheath tube, the front end of the metal pull rod is connected to the rear end of the braided steel wire, and the diameter of the plastic core rod is A through hole is opened in the through hole, and a high-frequency electric/argon gas access socket is installed in the through hole. The middle part of the high-frequency electric/argon gas access socket is an argon gas inlet, and the side is a high-frequency electric connection needle. The air inlet is sealed and communicated with the outer sheath in the plastic core rod, and the high-frequency electrical connection needle is elastically connected with the metal pull rod in the plastic core rod.

The outer sheath tube is a polytetrafluoroethylene outer sheath tube, and a tubular heat-resistant sheath is nested on the inner wall of the front end of the outer sheath tube. A cylindrical metal elastic device is installed at the end, the electrode needle is riveted with the cylindrical metal elastic device, and the steel wire loop is elastically connected with the cylindrical metal elastic device.

The cylindrical elastic device is a cylindrical shrapnel or a cylindrical spring.

A plastic limiting block is axially installed in the cavity of the plastic core rod, and the metal pull rod passes through the center of the plastic limiting block.

The rear end of the outer sheath tube is sleeved in the sheath tube, and the rear end of the sheath tube is connected to the front end of the plastic core rod through a rotating cap.

The rear end of the plastic core rod is connected to a fixed bracelet, and the rear end of the metal pull rod is connected to a sliding bracelet. When the sliding bracelet and the fixed bracelet move relatively, the metal pull rod and the braided steel wire are driven to make the steel wire loop fall from the outer sheath. The head protrudes or retracts.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model integrates the two structures and functions of snare cutting and argon plasma blood coagulation, and connects high-frequency electricity and argon gas from the electrode handle through a common interface (high-frequency electricity/argon gas access socket); The treatment end has a combination of a wire snare and an electrode needle, the wire snare is used for cutting, and the electrode needle is used for ionized argon gas coagulation. This dual-purpose snare-type soft electrode combines the two structures and functions of snare cutting and argon plasma blood coagulation. During minimally invasive surgery in the digestive system, frequent replacement of instruments is avoided, time is saved, and the surgical field of view is reduced. Obscurity increases safety while reducing equipment usage and saving costs.

Description of drawings

Fig. 1 is the structural representation of a kind of dual-purpose snare type soft electrode of the present utility model;

Fig. 2 is the enlarged view of place A of Fig. 1;

FIG. 3 is an enlarged view of B in FIG. 1 .

In the figure: wire snare 1, electrode needle 2, tubular heat-resistant sheath 3, cylindrical metal elastic device 4, polytetrafluoroethylene outer sheath tube 5, sheath tube 6, rotating cap 7, high-frequency electric/argon gas connection Socket 8, argon gas inlet 9, high-frequency electrical connection needle 10, braided steel wire 11, plastic limit block 12, metal pull rod 13, plastic core rod 14, sliding bracelet 15, fixed bracelet 16.

detailed description

The detailed description and technical content of the present utility model are as follows with accompanying drawings. However, the accompanying drawings are only provided for reference and illustration, and are not used to limit the present utility model.

According to Figures 1-3, a dual-purpose snare type soft electrode includes a snare body, and the snare body includes a plastic core rod 14, a metal pull rod 13, an outer sheath, a braided steel wire 11, and a steel wire snare 1. The metal pull rod 13 is worn in the inner cavity of the plastic core rod 14, and the steel wire snare 1 and the braided steel wire 11 are connected to each other and passed through the inner cavity of the outer sheath tube. The front end of the metal pull rod 13 is connected to the rear end of the braided steel wire 11, and the plastic core A through hole is opened in the radial direction of the rod, and a high-frequency electric/argon gas access socket 8 is installed in the through hole. The connecting pin 10, the argon gas inlet 9 is in sealing communication with the polytetrafluoroethylene outer sheath tube 5 in the plastic core rod 13, and the high-frequency electrical connecting pin 10 is elastically connected with the metal pull rod 13 in the plastic core rod 14. The outer sheath tube is a polytetrafluoroethylene outer sheath tube 5, and a tubular heat-resistant sheath 3 is embedded in the inner wall of the front end of the outer sheath tube, and an electrode needle 2 is arranged in the tubular heat-resistant sheath, and the front end of the outer sheath tube is close to the tubular heat-resistant sheath. A cylindrical metal elastic device is installed at the rear end of the sheath, the electrode needle is riveted with the cylindrical metal elastic device 4, and the wire snare 1 is elastically connected with the cylindrical metal elastic device. The cylindrical elastic device 4 is a cylindrical shrapnel or a cylindrical spring. The rear end of the outer sheath tube is sleeved in the sheath tube 6 , and the rear end of the sheath tube is connected to the front end of the plastic core rod through a rotating cap 7 .

The fixed bracelet 16 is fixedly connected with the plastic core rod 14, and the plastic limit block 12 is clamped and fixed in the plastic core rod 14; the sliding bracelet 15 is fixedly connected with the metal pull rod 13, and the metal pull rod 13 passes through the plastic limit block The center of 12 is fixedly connected with the braided steel wire 11 in the polytetrafluoroethylene outer sheath tube 5, and the braided steel wire is fixedly connected with the steel wire snare 1 at the end; when the sliding wristband 15 and the fixed wristband 16 move relatively, the metal pull rod is driven 13 and braided steel wire make wire snare 1 stretch out or take in from the head end of polytetrafluoroethylene outer sheath tube 5. The electrode needle 2 is riveted with the cylindrical metal shrapnel (or spring), the electrode needle 2 is in the tubular heat-resistant sheath 3 , and the tubular heat-resistant sheath 3 is embedded in the head end of the polytetrafluoroethylene outer sheath tube 5 . The wire snare 1 is elastically connected with a cylindrical metal shrapnel (or spring).

When in use, under the auxiliary monitoring function of the endoscope, the electrode tip is delivered to the lesion, and the high-frequency electricity/argon gas access socket 8 at the handle is respectively connected to the high-frequency electricity and argon gas of the argon high-frequency electric knife. With the argon gas function, push the sliding wristband 15, so that the wire snare 1 protrudes out of the hose, and the argon gas high-frequency electric knife sets the corresponding cutting mode, and then endoscopic cutting operations such as gastrointestinal polypectomy can be performed. The operation process Moderate bleeding will affect the surgical field of view. At this time, switch the argon high-frequency electrotome mode to enter the argon coagulation mode, pull back the sliding wristband 15, so that the wire snare 1 is retracted into the hose, and the argon high-frequency electrotome is set accordingly. The unique coagulation mode can coagulate the bleeding site, achieving the dual effects of cutting and coagulation.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Other equivalent changes using the patent spirit of the present utility model all belong to the patent scope of the present utility model.

Claims (6)

1. a dual-purpose snare type soft electrode, comprise snare body, described snare body comprises plastics core bar, metal pull bar, outer sheath, establishment steel wire, steel wire snare, described metal pull bar is through plastics core bar inner chamber, described steel wire snare, outer sheath inner chamber is through after establishment steel wire is interconnected, the front end of described metal pull bar is connected to the rear end of establishment steel wire, it is characterized in that, described plastics core bar radial direction offers a through hole, high-frequency electrical/argon access socket is installed in through hole, described high-frequency electrical/argon access receptacle intermediate portion is argon access port, avris is high-frequency electrical connecting needle, described argon access port seals with outer sheath and is communicated with in plastics core bar, described high-frequency electrical connecting needle is connected with metal pull bar elasticity in plastics core bar.

2. one according to claim 1 dual-purpose snare type soft electrode, it is characterized in that, described outer sheath is politef outer sheath, tubulose heat-proof sheath is nested with in outer sheath front inner wall, in tubulose heat-proof sheath, electrode needle is set, install a cylinder type metal elastic device in outer sheath front end near tubulose heat-proof sheath rear end, described electrode needle and cylinder type metal elastic device are riveted, and described steel wire snare is connected with cylinder type metal elastic device elasticity.

3. one according to claim 2 dual-purpose snare type soft electrode, is characterized in that, described Elastic Cylindrical device is cylindrical shell fragment or helical spring.

4. one according to claim 1 dual-purpose snare type soft electrode, is characterized in that, described plastics core bar lumen shaft is to installation plastics limited block, and described metal pull bar is through the center of plastics limited block.

5. one according to claim 1 dual-purpose snare type soft electrode, is characterized in that, described outer sheath rear end is set in protecting pipe, and protecting pipe rear end is connected to plastics core bar front end by turncap.

6. one according to claim 1 dual-purpose snare type soft electrode, it is characterized in that, described plastic core rod rear end is connected and fixed bracelet, the rear end of described metal pull bar connects slip bracelet, when described slip bracelet and fixing bracelet relative movement, metal pull bar and braided steel wire is driven to make steel wire snare stretch out from the head end of outer sheath or take in.