Medical device and cooling-fluid/rinsing-fluid hose

Patent metadata

Field	Value
Publication number	US-12440226-B2
Application number	US-202117920685-A
Country	US
Kind code	B2
Filing date	Apr 21, 2021
Priority date	Apr 23, 2020
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

A medical device, a cooling-fluid/rinsing-fluid hose, and a method for using a medical device. The medical device includes a handpiece with an interior enclosed by a handpiece housing, preferably for receiving a drive. The medical device also has an effector arranged on or coupleable to the handpiece and a supply device for supplying cooling fluid and/or rinsing fluid to the effector. The supply device includes a guide tube or guide cannula that passes through the interior in the handpiece longitudinal direction and is rigidly connected to the handpiece. The guide tube or guide cannula, which opens to the outside in a distal and in a proximal handpiece region, longitudinally guides a preferably single-use cooling-fluid/rinsing-fluid hose that is pushed into the guide tube.

First claim

The invention claimed is:

1. A medical device comprising:
a handpiece comprising a handpiece housing that encloses an interior of the handpiece;
an effector arranged on or coupleable to the handpiece; and
a supply device for cooling and/or rinsing fluid to the effector,
the supply device for cooling and/or rinsing fluid comprising a guide tube or guide cannula, at least a portion of which passes through the interior in a longitudinal direction of the handpiece,
the guide tube or guide cannula fixedly connected to the handpiece and extending in the interior of the handpiece housing continuously from a proximal handpiece region to a distal handpiece region,
the guide tube or guide cannula opening outwardly in the distal handpiece region and in the proximal handpiece region, and
the guide tube or guide cannula being configured to longitudinally guide a cooling-fluid/rinsing-fluid hose as the cooling-fluid/rinsing-fluid hose is inserted into the guide tube or guide cannula.

2. The medical device according to claim 1 , further comprising the cooling-fluid/rinsing-fluid hose,
the cooling-fluid/rinsing-fluid hose having a hose length greater than a length of the guide tube or guide cannula so that the cooling-fluid/rinsing-fluid hose extends completely through said length of the guide tube or guide cannula.

3. The medical device according to claim 2 , wherein the guide tube or guide cannula and the cooling-fluid/rinsing-fluid hose are configured such that, in an uncompressed state, the cooling-fluid/rinsing-fluid hose has a larger outer circumference than a diameter of the guide tube or guide cannula.

4. The medical device according to claim 1 , wherein the guide tube or guide cannula has one or more outlet openings into the interior.

5. The medical device according to claim 1 , wherein the guide tube or guide cannula is arranged in proximity to an inside of the handpiece housing.

6. The medical device according to claim 1 , wherein the guide tube or guide cannula, starting from an end portion projecting distally from the handpiece housing obliquely with respect to a longitudinal axis of the handpiece and forming an inlet port that is exclusively obliquely oriented, transitions smoothly into a central region within the interior, which extends parallel to the longitudinal axis of the handpiece, which smoothly opens into an end portion projecting proximally from the handpiece housing obliquely with respect to the longitudinal axis of the handpiece and forming an exit port, the end portion being bent outside the handpiece housing to form an outlet end portion extending parallel to the longitudinal axis of the handpiece in a proximal direction.

7. The medical device according to claim 6 , wherein, when the cooling-fluid/rinsing-fluid hose is pulled out of the interior of the handpiece, the inlet port additionally configures a coupling for connecting a cleaning fluid line.

8. The medical device according to claim 6 , wherein regions where the central region are connected with the respective end portions are S-shaped.

9. The medical device according to claim 1 , wherein the medical device further comprises a flexible cooling-fluid/rinsing-fluid hose for insertion into the guide tube or guide cannula, wherein the flexible cooling-fluid/rinsing-fluid hose has a first end configured to be closed or covered by an end cap, wherein the closed first end or end cap is curved outward to facilitate insertion into the guide tube or guide cannula.

10. The medical device according to claim 9 , wherein the cooling-fluid/rinsing-fluid hose is provided for single use.

11. The medical device according to claim 9 , wherein the cooling-fluid/rinsing-fluid hose has a plurality of different diameter regions starting from the first end and being arranged in a longitudinal direction of the flexible cooling-fluid/rinsing-fluid hose, the plurality of different diameter regions arranged in series with continuous transitions or with the formation of shoulders.

12. The medical device according to claim 1 , wherein the guide tube or guide cannula is perforated.

13. The medical device according to claim 1 wherein the guide tube or guide cannula has:
a distal end portion being arranged outside of the handpiece,
an intermediate portion being arranged inside of the handpiece, and
a proximal end portion, being arranged outside of the handpiece,
wherein the distal end portion, the intermediate portion and the proximal end portion are interconnected to form one single piece.

14. The medical device according to claim 1 , wherein the guide tube or guide cannula enters the interior of the handpiece housing at the proximal handpiece region, exits the interior of the handpiece housing at the distal handpiece region, and extends continuously from the proximal handpiece region to the distal handpiece region.

15. A method for using a medical device comprising:
a handpiece comprising a handpiece housing that encloses an interior of the handpiece;
an effector arranged on or coupleable to the handpiece;
a supply device for cooling and/or rinsing fluid to the effector; and
a guide tube or guide cannula that passes at least partially through the interior in a longitudinal direction of the handpiece,
the guide tube or guide cannula fixedly connected to the handpiece,
the guide tube or guide cannula opening outwardly in a distal handpiece region and in a proximal handpiece region,
the guide tube or guide cannula being configured to longitudinally guide a cooling-fluid/rinsing-fluid hose as the cooling-fluid/rinsing-fluid hose is inserted into the guide tube or guide cannula, wherein
the medical device further comprises a flexible cooling-fluid/rinsing-fluid hose for insertion into the guide tube or guide cannula, wherein the flexible cooling-fluid/rinsing-fluid hose has a first end configured to be closed or covered by an end cap, wherein the first end or end cap is curved outward to facilitate insertion into the guide tube or guide cannula,
the method comprising the steps of:
inserting the closed first end of the flexible cooling-fluid/rinsing-fluid hose from outside the handpiece housing into a tube exit opening outward in the distal handpiece region and pushing the flexible cooling-fluid/rinsing-fluid hose through the guide tube or guide cannula so that the closed first end advances beyond a proximal tube entrance opening in the proximal handpiece region and protrudes from the guide tube or guide cannula; and
cutting off the first end after the first end protrudes from the guide tube or guide cannula.

Assignees

• Aesculap Ag

Inventors

• Hoegerle Roland-Alois
• Buerk André
• Schaz Uwe
• Machill Martin
• Hermle Simone
• Dufoo Ochoa Saul

Classifications

• A61B2017/1651

  for cooling · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title

• A61B17/1622

  Drill handpieces (A61B17/1626, A61B17/1628 take precedence) · CPC title

• A61B17/1644 Primary

  using fluid other than turbine drive fluid · CPC title

• A61B2217/007

  with irrigation system · CPC title