Medical connecting device

Inventors: Zhi Tang (Nanjing, CN); Mingqiao Fan (Nanjing, CN); Huan Xie (Nanjing, CN); Deqing Sha (Nanjing, CN); Changqing Li (Nanjing, CN); Derong Leng (Nanjing, CN); Chunjun Liu (Nanjing, CN)

Assignee: Micro-Tech (Nanjing) Co., Ltd.

A61B1/00128 A61M25/0045 A61B1/00119 A61B10/0283 A61B18/1442 A61M25/005

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Quick Facts

Patent No.: US 12708250
App. No.: 17/289,017
Granted: Aug 18, 2026
Kind: B2

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Abstract

A medical connecting device, having a proximal end and a distal end; the medical connecting device includes an insulating layer ( 3, 123, 222, 322 ) and a spiral tube ( 2, 124, 223, 323 ), the insulating layer ( 3, 123, 222, 322 ) covering the outermost layer of the whole device; the spiral tube ( 2, 124, 223, 323 ) has a conductive hollow tubular structure; and the spiral tube ( 2, 124, 223, 323 ) has a spiral structure, and a pitch of the spiral structure gradually changes in the direction from the proximal end to the distal end. The medical connecting device is able to integrate multiple functions such as electricity conducting, liquid passage, powder spraying, negative pressure suction, sealing, insulation, and support.

Claims (26)

1 . A medical connecting device having a proximal end and a distal end, comprising a continuous spiral tube and an insulating layer directly coated on an outer surface of the continuous spiral tube, the insulating layer forming an outermost layer of the device, wherein the continuous spiral tube integrates functions of electricity conducting and liquid passage,

wherein the continuous spiral tube has a conductive hollow tubular structure made of a material with electrical conductivity, provides a channel to enable the function of liquid passage, and forms a current loop for conducting electricity to an instrument electric part connected at the distal end via the continuous spiral tube,

wherein the continuous spiral tube consists of a middle spiral structural region, a distal non-spiral structural region extending distally from the middle spiral structural region, and a proximal non-spiral structural region extending proximally from the middle spiral structural region, with the distal non-spiral structural region, the proximal non-spiral structural region, and the middle spiral structural region all having hollow tubular structure made of a material with electrical conductivity,

wherein the middle spiral structural region has a spiral structure with a pitch that gradually changes from a proximal end of the middle spiral structural region to a distal end of the middle spiral structural region,

wherein the medical connecting device further comprises one or more seals provided at the distal non-spiral structural region or the proximal non-spiral structural region and connected with the distal non-spiral structural region or the proximal non-spiral structural region, wherein the insulating layer covers outer surfaces of the one or more seals, and

wherein the one or more seals are of a non-planar structure of a concavo-convex type, a concave type, or a convex type.

2 . The medical connecting device according to claim 1 , wherein the pitch gradually decreases from the proximal end of the middle spiral structural region to the distal end of the middle spiral structural region, a smaller pitch at the distal end of the middle spiral structural region renders flexibility that facilitates passing through a curved channel of a medical apparatus, and a larger pitch at the proximal end of the middle spiral structural region provides support performance and facilitates pushing a medical instrument to the distal end of the middle spiral structural region.

3 . The medical connecting device according to claim 1 , wherein the pitch gradually decreases and then gradually increases from the proximal end of the middle spiral structural region to the distal end of the middle spiral structural region.

4 . The medical connecting device according to claim 1 , wherein the pitch gradually increases from the proximal end of the middle spiral structural region to the distal end of the middle spiral structural region.

5 . The medical connecting device according to claim 1 , wherein the convex portion of the non-planar structure may be a semicircle, a rectangle, a trapezoid, or a toothed shape.

6 . The medical connecting device according to claim 1 , wherein the insulating layer is made of a polymer material.

7 . The medical connecting device according to claim 6 , wherein the polymer material is polytetrafluoroethylene, fluoroethylene propylene copolymer, or polyethylene.

8 . The medical connecting device according to claim 1 , wherein the insulating layer is coated on the outer surface of the spiral tube through pyrocondensation, welding, or pasting.

9 . A medical connecting device having a proximal end and a distal end, comprising a continuous spiral tube and an insulating layer coated directly on an outer surface of the continuous spiral tube, the insulating layer forming an outermost layer of the device, wherein the continuous spiral tube integrates functions of electricity conducting and liquid passage,

wherein the continuous spiral tube includes a middle spiral structural region, a distal non-spiral structural region extending distally from the middle spiral structural region, and a proximal non-spiral structural region extending proximally from the middle spiral structural region, with the distal non-spiral structural region, the proximal non-spiral structural region, and the middle spiral structural region all having hollow tubular structure made of a material with electrical conductivity,

wherein the one or more seals are of a non-planar structure of a concavo-convex type, a concave type, or a convex type.

10 . The medical connecting device according to claim 9 , wherein the insulating layer is coated directly on the outer surface of the spiral tube through pyrocondensation, welding, or pasting.

11 . The medical connecting device according to claim 9 , wherein the pitch gradually decreases and then gradually increases from the proximal end of the middle spiral structural region to the distal end of the middle spiral structural region.

12 . The medical connecting device according to claim 9 , wherein the convex portion of the non-planar structure may be a semicircle, a rectangle, a trapezoid, or a toothed shape.

13 . The medical connecting device according to claim 9 , wherein the insulating layer is made of a polymer material.

14 . The medical connecting device according to claim 13 , wherein the polymer material is polytetrafluoroethylene, fluoroethylene propylene copolymer, or polyethylene.

15 . The medical connecting device according to claim 9 , wherein the pitch gradually decreases from the proximal end of the middle spiral structural region to the distal end of the middle spiral structural region, a smaller pitch at the distal end of the middle spiral structural region renders flexibility that facilitates passing through a curved channel of a medical apparatus, and a larger pitch at the proximal end of the middle spiral structural region provides support performance and facilitates pushing a medical instrument to the distal end of the middle spiral structural region.

16 . The medical connecting device according to claim 9 , wherein the pitch gradually increases from the proximal end of the middle spiral structural region to the distal end of the middle spiral structural region.