Heatable tweezers, and charging device for the tweezers

• US 10,046,327 B2
• Filed: 05/22/2015
• Issued: 08/14/2018
• Est. Priority Date: 05/30/2014
• Status: Active Grant

• Current Assignee: Pfm Medical AG
• Original Assignee: Pfm Medical AG
• Inventors: Schneider, Erwin, Kraus, Steffen
• Primary Examiner(s): Nagpaul, Jyoti
• Application Number:
  US15/302,577
• Publication Number:
  US 20170036211A1
• Time in Patent Office: 1,180 Days
• CPC Class Codes: A61B 10/06 Biopsy forceps , e.g. with cup-shaped jaws
• CPC Class Codes: A61B 17/30 Surgical pincettes without pivotal connectionsfor holding suture needles or materials A61B17/0483; wound clamps A61B17/08 ; hand-held gripping tools without pivotal connections in general B25B9/02
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: B01L 2300/023 Sending and receiving of information, e.g. using bluetooth
• CPC Class Codes: B01L 2300/025 Displaying results or values with integrated means
• CPC Class Codes: B01L 2300/1827 using resistive heater
• CPC Class Codes: B01L 7/00 Heating or cooling apparatus autoclaves B01J3/04; Heat insulating devices
• CPC Class Codes: B01L 9/50 Clamping means, tongs in general F16B2/06

Abstract

Tweezers, in particular for handling histological preparations, preferably thin tissue specimens, with two limbs connected elastically at one end, and with tips formed at the other, free end of the limbs and together forming an engagement area, wherein a central area serves for holding and actuating the limbs in order to bring the tips into contact with each other, are characterized in that the tips and/or the connection area of the limbs are designed as a housing with a storage medium for storing energy, and in that the storage medium directly or indirectly heats the engagement area or the tips to a predefined temperature.

Claims

1. Tweezers (1) for handling histological preparations, said tweezers comprising:

two legs (4) which are joined elastically at one end of each of the two legs (4) and define a joint region;

tips (2) constructed on the opposing free ends of each of the two the legs (4) and defining an engagement region; and

a central region located intermediate the joint region and the engagement region, the central region serving for holding and actuating the legs (4) for the purpose of bringing the tips (2) into contact with each other,

wherein;

at least one of the tips (2) or the joint region are constructed as a housing (6) comprising a storage medium for storing power,

the storage medium at least one of directly or indirectly heats the engagement region to a predetermined temperature,

the housing (6) has thermally insulating properties,

the storage medium is either a heat accumulator or an electrical power storage device configured as an electrical heating device, wherein the storage medium acts upon the engagement region and is in thermally conductive contact with the engagement region,

a charging station (3) is operatively attachable to the tweezers (1) and configured for positioning the tweezers and for at least one of inductive charging of energy storage or for direct power supply of an internal heating device,

at least one of the inductive charging or the direct power supply occurs when the tweezers (1) are positioned in the charging station (3), and

the engagement region forming the tip (2) is exchangeable in tip pairs of different shapes.

2. Tweezers according to claim 1, wherein the histological preparations are thin tissue samples.

3. Tweezers according to claim 1, wherein the electrical heating device is a resistance heating device.

4. Tweezers according to claim 3, wherein the resistance heating device comprises as a heating element at least one of a heating wire, a heating coil, a heating jacket, a heating pad or a heating cartridge.

5. Tweezers according to claim 1, wherein the electrical power storage device is at least one of a battery or a capacitor.

6. Tweezers according to claim 1, wherein a control is provided for the purpose of heating the engagement region to a predetermined temperature.

7. Tweezers according to claim 1, wherein a control is provided for the purpose of heating the engagement region to a selectable temperature.

8. Tweezers according to claim 1, wherein the tips (2) are made of metal.

9. Tweezers according to claim 1, wherein the tips, regardless of the base material, are coated with at least one of a thermally conductive or a hard material.

10. Tweezers according to claim 9, wherein the tips are coated with titanium or a titanium alloy.

11. Tweezers according to claim 1, wherein at least one of the legs (4) or the housing (6) is made of plastic.

12. Tweezers according to claim 1, wherein at least one of the legs (4) or the housing (6) is made of ceramic.

13. Tweezers according to claim 1, wherein the exchangeable free ends of the legs (4) are connectable to the legs (4) by at least one of friction and an interlocking means.

14. Tweezers according to claim 13, wherein interlocking means comprise at least one of a plug connection, a snap connection, a screw connection or a bayonet connection.

15. Device for providing at least one ready-to-use pair of tweezers (1) according to claim 1, wherein:

the charging station (3) defines an insertion/placement/attachment region that is constructed in either the housing (6) on or in the top side (5), the insertion/placement/attachment region being configured to facilitate for vertical positioning and charging of at least one of the pair of tweezers (1);

the housing (6) has a plurality of receptacles for providing pairs of variably shaped tips.

16. Device according to claim 15, wherein the housing (6) has two insertion/placement/attachment regions for receipt of two pairs of tweezers (1).

17. Device according to claim 15, wherein the plurality of receptacles comprise insertion openings (7) or contact pins for providing pairs of variably shaped tips.

18. Device according to claim 15, wherein a heating device is provided for heating the receptacles and the pairs of tips therein, the heating device being constructed as either a resistance heating device or as being inductively coupled directly to the tips.

19. Device according to claim 15, wherein the housing (6) comprises a display (9) which shows at least one of the operating mode of the station (3) or the charge status of the tweezers (1).

20. Device according to claim 15, wherein the display is in a front region of the device, the front region being angled.

21. Device according to claim 15, further comprising a wireless connection between the station (3) and the tweezers via which the charge status/operating mode of the tweezers (1) is transmitted to the station (3).

22. Device according to claim 21, wherein the wireless connection between the station (3) and the tweezers is a Bluetooth connection.

23. Device according to claim 21, wherein the charge status/operating mode of the tweezers (1) transmitted to the station (3) is indicated at least one of visually or acoustically.