Medical device

Patent metadata

Field	Value
Publication number	US-10463394-B2
Application number	US-201415118274-A
Country	US
Kind code	B2
Filing date	Nov 17, 2014
Priority date	Feb 18, 2014
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

There is provided a medical device whose occupied space is reduced. According to an aspect of the present invention, a medical device (1) adjusts a position of a medical instrument including a rod-like insertion unit (201) for being inserted into a body. The medical device includes an ultrasonic actuator that holds the insertion unit of the medical instrument, and that displaces or rotates the insertion unit with respect to the ultrasonic actuator, and an actuator fixing unit (101 and 102) that fixes a position of the ultrasonic actuator to a surgical site.

First claim

The invention claimed is:

1. A medical device which adjusts a position of a medical instrument with respect to a human body, the medical instrument including a rod that inserts the medical instrument into the human body, the medical device comprising:
an actuator that holds the rod of the medical instrument, and that displaces or rotates the rod relative to the actuator; and
a hollow housing that fixes a position of the actuator to a surgical site, wherein
the actuator includes a first housing and a second housing;
the first housing and the second housing are separate elements that are connected to one another by a spring so as to be openable and closeable;
the spring applies a restoring force in a direction that closes together the first housing and the second housing;
the actuator holds the rod at respective contact points on the first and second housings;
the actuator includes a friction driver that displaces or rotates the rod by using friction with a surface of the rod; and
the friction driver displaces or rotates the rod by applying a standing wave vibration to the rod.

2. The medical device according to claim 1 ,
wherein at least one of the contact points is a driving point to displace or rotate the rod by using friction with a surface of the rod.

3. The medical device according to claim 1 ,
wherein at least one of the contact points is a multi-degree-of-freedom driving point to displace or rotate the rod by using friction with a surface of the rod.

4. The medical device according to claim 1 ,
wherein the hollow housing is a trocar.

5. The medical device according to claim 4 , further comprising:
a needle which fixes the hollow housing to a surgical port.

6. The medical device according to claim 1 ,
wherein the actuator displaces the rod in an axial direction thereof.

7. The medical device according to claim 1 ,
wherein the actuator rotates the rod around a rotation axis thereof.

8. The medical device according to claim 1 , further comprising:
a bending drive device that bends the rod.

9. The medical device according to claim 1 ,
wherein the friction driver is a single device which can selectively displace or rotate the rod relative to the actuator.

10. The medical device according to claim 1 ,
wherein the friction driver is an ultrasonic vibrator.

11. The medical device according to claim 1 , further comprising:
a controller that receives an instruction from a user and gives an operation instruction to the actuator in accordance with the instruction,
wherein the hollow housing and the controller are detachably connected to each other by a cable.

12. The medical device according to claim 1 , further comprising:
a controller receives an instruction from a user and gives an operation instruction to the actuator in accordance with the instruction,
wherein the controller gives the operation instruction to the actuator through radio communication.

13. The medical device according to claim 1 ,
wherein the hollow housing has an incorporated electric cell for driving the actuator.

14. The medical device according to claim 1 ,
wherein the hollow housing is provided with a flexible arm stand which supports the actuator so as to fix the position of the actuator.

15. The medical device according to claim 1 ,
wherein the actuator displaces or rotates the rod of an endoscope serving as the medical instrument.

Assignees

• Sharp Kk
• Public Univ Corporation Hiroshima City Univ

Inventors

• Hamamoto Masaki
• Taniguchi Kazuhiro
• Okajima Masazumi

Classifications

• A61B17/3403

  Needle locating or guiding means · CPC title

• H02N2/006

  Elastic elements, e.g. springs (in general F16F1/00) · CPC title

• H02N2/0075

  Electrical details, e.g. drive or control circuits or methods · CPC title

• H02N2/0095

  producing combined linear and rotary motion, e.g. multi-direction positioners · CPC title

• A61B34/30

  Surgical robots · CPC title