WO2015033212A1 - Aspiration device - Google Patents

Aspiration device Download PDF

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Publication number
WO2015033212A1
WO2015033212A1 PCT/IB2014/001740 IB2014001740W WO2015033212A1 WO 2015033212 A1 WO2015033212 A1 WO 2015033212A1 IB 2014001740 W IB2014001740 W IB 2014001740W WO 2015033212 A1 WO2015033212 A1 WO 2015033212A1
Authority
WO
WIPO (PCT)
Prior art keywords
aspiration
unit
fluid
cannula
catheter
Prior art date
Application number
PCT/IB2014/001740
Other languages
French (fr)
Inventor
Vaisakh Nappady JOY
Saaransh JAIN
Nitesh Kumar JANGIR
Ankita KASHYAP
Jagdish CHATURVEDI
Karan MADAN
Original Assignee
Secretary, Department Of Biotechnology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to IN2639DE2013 priority Critical
Priority to IN2639/DEL/2013 priority
Application filed by Secretary, Department Of Biotechnology filed Critical Secretary, Department Of Biotechnology
Publication of WO2015033212A1 publication Critical patent/WO2015033212A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/0283Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/0045Devices for taking samples of body liquids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/0045Devices for taking samples of body liquids
    • A61B10/0048Devices for taking samples of body liquids for taking amniotic fluid samples
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/025Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/0045Devices for taking samples of body liquids
    • A61B2010/0077Cerebrospinal fluid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/025Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
    • A61B2010/0258Marrow samples

Abstract

An aspiration device (100) includes an aspiration unit (102) for extracting fluid from an aspiration site on a patient's body. The aspiration unit (102) comprises a cannula (112) for piercing the aspiration site and a catheter (110) connected to the cannula (112). The catheter (110) adapted to be inserted in the aspiration site to extract the fluid. A stabilizer (108) is provided to affix the aspiration unit (102) to the patient's body. The stabilizer ( 108) includes a guide (202) having a guiding slot (204) for guiding the movement of the aspiration unit (102) while piercing the aspiration site. A collection bag (106) adapted to be coupled to the catheter (110) for collecting the fluid extracted by the aspiration unit (102). A transfer tube (104) adapted to couple the collection bag (106) and the aspiration unit (102) to transfer the fluid from the aspiration unit ( 102) to the collection bag ( 106).

Description

ASPIRATION DEVICE

TECHNICAL FIELD

[0001] The present subject matter relates to a medical device, and in particular, to an aspiration device.

BACKGROUND

[0002] Fluid aspiration is a procedure used to remove unwanted or excess fluid, tissue, or air accumulated in the body. Such fluid aspiration is also performed to obtain aspirated fluid that may be used to diagnose various diseases and disorders, and can be performed in almost any body area or organ. For example, thoracentesis may be performed to remove excessive fluid from pleural space in lungs, or aspiration may be performed to remove excessive fluid from pleural space, and bone marrow aspiration and biopsy may be performed to remove bone marrow from the inside of a bone to test production of healthy red blood cells. The aspiration procedure typical ly includes puncturing a site of aspiration and sucking the excess fluid using a syringe.

BRIEF DESCRIPTION OF THE FIGURES

[0003] The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to reference l ike features and components:

[0004] Fig. 1 il lustrates a block diagram of an aspiration device, in accordance with an embodiment of the present subject matter.

[0005] Figs. 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, and 2i il lustrate blown up views of various components of the aspiration device, in accordance with an embodiment of the present subject matter. |0006] Fig. 3a, 3b, and 3c il lustrate the aspiration device at different stages of aspiration, in accordance with an embodiment of the present subject matter.

[0007] Fig. 4a, 4b, 4c, 4d, 4e, and 4f illustrate the aspiration device at different stages of aspiration, in accordance with another embodiment of the present subject matter.

[0008] Fig. 5 il lustrates a stabil izer of the aspiration device, in accordance with an embodiment of the present subject matter.

[0009] Figs. 6a and 6b il lustrate positioning of one-way valves in the aspiration device, in accordance with a first embod iment and a second embodiment of the present subject matter, respectively.

[0010] Fig. 6c and 6d illustrate the one-way valve in an operating condition and a non-operating cond ition, respectively, in accordance with an embodiment of the present subject matter.

[001 1 ] Fig. 7 illustrates a catheter of the aspiration device, in accordance with an embodiment of the present subject matter.

DETAI LED DESCRI PTION

[0012] Fluid aspiration is a body fluid sampling procedure in which a body area or organ, hereinafter interchangeably referred to as a site of aspiration, is punctured by a needle to col lect sample fluid or tissue accumulated in the body area. The fluid as used in the description herein includes l iquid, gas, tissue/ cel lular material, and their mixtures. Fluid aspiration may be performed either for diagnostic purposes to identify the cause of the disease or may be used as a therapeutic measure where some volume of fluid can be removed to lessen discom fort or prevent further spread of infection. Examples of fluid aspiration processes typically performed include, but are not l imited to. thoracentesis, abdominal aspiration, aspiration, bone marrow aspiration and biopsy, amniocentesis, arthrocentesis, lump aspiration, cyst aspiration, tumor aspiration, or mass aspiration, and lumbar puncture.

[0013] One of the conventional processes of aspiration involves surgical puncturing of the site of aspiration, for instance, pleural cavity in case of aspiration of lungs for thoracentesis, with a needle and insertion of a catheter line for removal of excess fluid through the catheter line. As part of the procedure, the needle is either left in a patient during the fluid draining procedure or partially removed up to a predetermined point and is left hanging around the portion of the catheter outside the body during the remainder of the procedure. However, as the needle is generally covered with potentially contaminated body fluids, it may expose hospital personnel to infections. Also the catheters used with the needles generally have a single opening which can be easily occluded while draining the fluid. Further, improper removal of catheter from the site of insertion after the procedure may expose the site of insertion to entry of air, thus leading to an undesirable situation, such as pneumothorax in the case of aspiration of the lungs.

[0014] Furthermore, a slight misdirected movement of the needle either while insertion or in the inserted position may cause perforation of internal organs of the patient, leading to bleeding and infections. For instance, unwanted movement of the catheter and the needle due to an unstable support used fo supporting the catheter during the aspiration may cause injuries to the patient. Additionally, as the needle is typical ly secured on the site of insertion either manually, i.e.. by holding the needle by hands or using many pieces of an adhesive tape, the probabil ity of the patient getting hurt due to any movement of the needle is very high.

[0015] The present subject matter describes an aspiration device and a medical kit having the aspiration device for performing aspiration, according to an embodiment of the present subject matter. I n one example, the aspiration device can be implemented for extracting excessive fluid from a body area or organ, such as lungs of a patient. The aspiration device described herein provides for effective, easy, and safe removal of the fluid.

[0016] According to an embodiment, the aspiration device includes an aspiration unit, a stabi lizer, a transfer tube, and a collection bag. The aspiration unit may be used by an operator, such as a doctor or other such medical personnel, to drain fluid from an aspiration site, i.e., the site of aspiration of the patient. The stabi lizer is provided to affix the aspiration unit to the patient's body when inserted in the aspiration site. The transfer tube is connected to the aspiration unit and is configured to transfer the fluid aspirated by the aspiration unit into the collection bag; thus, managing and storing the fluid in a safe and leak proof manner. In one implementation, the aspiration unit includes a base unit for coupling the aspiration unit to the stabilizer and the transfer tube, a cannula for piercing the aspiration site, and a catheter attached to one end of the cannula for draining out the fluid from the site of aspiration into the transfer tube and in turn to the col lection bag. In one implementation, the stabi l izer includes a guide having a guiding slot for receiving the base unit for guiding the movement of the aspiration unit while piercing the aspiration site, thus control l ing insertion of the cannula in the aspiration site. The stabilizer further includes a locking mechanism for locking the catheter during fluid extraction. Further, the stabi l izer may have an adhesive or may be tied with the help of tie provided on a lower side of the stabil izer or tie holding perforation may be provided for resting on the aspiration site and for securing the stabi l izer to the aspiration site of the patient, thus stabilizing the aspiration unit.

|0017] In operation, an insertion area is initial ly located and marked by the operator on the patient. The patient may then be admin istered local anesthesia, and the stabi l izer is placed on the aspiration site using the adhesive. The aspiration unit is then coupled to the stabi l izer such that a guiding means of the base unit of the aspiration unit slides into the guiding slot of the stabilizer. The aspiration unit is attached to the stabi l izer such that the cannula and the catheter may be pushed forward in the stabilizer to pierce through the aspiration site. For this, the cannula is

I

placed such that a sharp pointed piercing end of the cannula protrudes from the catheter, thus al lowing the catheter encapsulating the cannula to enter the aspiration site. In one implementation, a syringe may be connected to the cannula for creating a suction effect during aspiration.

J0018] In order to pierce the aspiration site, the operator may push the syringe such that the aspiration unit slides further in the guiding slot, thus piercing the aspiration site. In one implementation, the operator may further pull a plunger of the syringe while piercing the aspiration site to create the suction effect. Upon reaching a cavity having the fluid to be aspirated, the fluid may move into the syringe due to the suction effect, thus indicating successful piercing of the aspiration site. The cannula is then removed from the aspiration unit in a leak proof manner as a plug provided in the base unit closes the catheter temporarily, thus preventing flow of fluid from the catheter to the base unit while the cannula is being removed. [0019] Subsequently, a first end of the transfer tube is connected to first port of the base unit for receiving the fluid from the aspiration unit, while a second end of the transfer tube is connected to the collection bag for discharging the fluid. In one implementation, the catheter is provided with multiple secondary open ings that al low the fluid to be drained even in case the main opening of the catheter gets blocked. The fluid is thus continuously drained to the collection bag. On completion of the aspiration procedure, the transfer tube is disconnected from the aspiration unit and the col lection bag and the aspiration unit is subsequently removed from the patient's body by pul l ing out the catheter from the aspiration site. In one implementation, the stabilizer is provided with an auto-bandaging unit for bandaging the aspiration site after the fluid extraction is performed. The auto-bandaging unit is provided on the side resting on the aspiration site such that when the stabi l izer is removed after the aspiration process, the bandage is automatical ly placed on the insertion point, having the piercing caused by the needle, to cover the punctured site on the patient's body. [0020] The present aspiration device thus helps in performing the fluid aspiration in a safe and effective manner. Providing the stabilizer helps in preventing chances of injury or leakage due to sudden misal ignment of the aspiration device. Further, providing the guide with the guiding unit facil itates in control ling insertion of the cannula in the aspiration site during the aspiration process. Further providing the auto-bandaging unit for bandaging the aspiration site facil itates in preventing exposure of the aspiration site to the air. Further, providing the catheter with the multiple openings helps in ensuring that fluid is continuously drained even if the main opening of the catheter is blocked, thus preventing any need of stopping the aspiration process mid way in order to change or clean the catheter. These and other advantages of the present subject matter would be described in greater detail in conjunction with the following figures. While aspects of described systems for an aspiration device can be implemented in any number of different systems, environments, and/or configurations, the embodiments are described in the context of the following exemplary system(s).

(0021] Fig. 1 illustrates a block diagram of an aspiration device 1 00, in accordance with an embodiment of the present subject. In one example, the aspiration device 100, hereinafter referred to as the device 100, can be implemented for extracting fluid from an aspiration site, such as pleural fluid from pleural cavity, ascetic fluid from abdomen of a patient, and tissues from bone marrow. In said embodiment, the device 100 includes an aspiration unit 1 02, a transfer tube 104, a collection bag 106, and a stabilizer 108. The aspiration unit 102 may be used by an operator, such as doctor or other such medical personnel, operating the device 100 to extract fluid from the aspiration site. The transfer tube 1 04 is configured to transfer the col lected fluid from the aspiration unit 1 02 into the collection bag 1 06 thus collecting and storing the fluid in a safe and a leak proof manner. The stabilizer 108 is provided for securing the aspiration unit 1 02 on the aspiration site whi le piercing the aspiration site and when inserted in the aspiration site. |0022] The transfer tube 104 may be a detachable tube provided such that a first end of the transfer tube 104 may be connected to the aspiration unit 102 while a second end may be secured to the collection bag 1 06. Further, the col lection bag 1 06 may have a storage capacity equal to a maximum volume of fluid that can be drained. Further, the aspiration unit 102 includes a catheter 1 10, a cannula 1 12, and a base unit 1 14. The cannula I 12, as will be understood, is provided to pierce the aspiration site. In one implementation, the cannula 1 12 may be provided with a needle (not shown in the figure) for piercing the aspiration site. Further, the catheter 1 1 0 is connected to the cannula 1 12 for draining out the fluid from the aspiration site. In one implementation, the catheter 1 10 may be a hol low sheath covering the cannula 1 12 such that a lower end (not shown in the figure) of the cannula 1 12 protrudes from an opening (not shown in the figure) in the bottom end (not shown in the figure) of the catheter 1 10 while piercing the aspiration site. The aspiration unit 1 02 may further include a cover (not shown in this figure) for covering the catheter ( 1 1 0) and the cannula ( 1 12) when the aspiration device ( 100) is not being used.

[0023] The base unit 1 14 is provided for coupling the aspiration unit 1 02 to the stabilizer 1 08 and the transfer tube 1 04. For instance, the base un it 1 14 may include a first port (not shown in this figure) for connecting the transfer tube 104 to the aspiration unit 102 for in turn connecting the col lection bag 1 06 to the aspiration unit 1 02 for receiving the fluid from the catheter 1 10. In one implementation, the fluid is transferred to the transfer tube 1 04 in a controlled manner. For the purpose, a stopper (not shown in this figure) adapted to receive the transfer tube 104 is provided such that the transfer tube 1 04 may be inserted and slid in sl iding slot of the stopper. The sl iding slot to allow the stopper to be slid over the transfer tube 104 for control l ing the flow of the fluid. Further, in another embodiment, the catheter 1 1 0 includes two one-way valves for controlling the flow of the fluid from the aspiration unit 1 02 to the transfer tube 1 04 and vice-versa. Further, the cannula 1 1 2 may be provided with an air blocking mechan ism, such as a spring mechanism, a mechanical mechanism, and a screw mechanism to block air from entering the cannula I 12. The base unit 114 may further include a guiding means (not shown in this figure) for guiding the aspiration unit 102 in the stabilizer 108 while piercing the aspiration site.

[0024] In one implementation, the stabilizer 108 may include a guide (not shown in this figure) having a guiding slot (not shown in this figure) for receiving the guiding means for guiding the movement of the aspiration unit 102 while piercing the aspiration site. Providing the guiding slot for receiving the guiding means facilitates in controlling the insertion of the cannula 112 in the aspiration site. Further, the guiding slot facilitates in providing stability to the aspiration unit 102 while piercing the aspiration site. The stabilizer 108 further includes an adhesive on a lower side, i.e., the side resting on the aspiration site for securing the stabilizer 108 to the patient, thus stabilizing the aspiration unit 102. Providing the adhesive also facilitates in stabilizing the stabilizer 108 during the aspiration process, thus allowing the device 100 to perform the aspiration process without moving, preventing any damages to other organs of the patient. In one embodiment, the stabilizer 108 is made of a see through material which gives better visuals while placing the aspiration device 100 on the aspiration site.

|0025] Further, the stabilizer 108 includes an auto-bandaging unit (not shown in the figure) for bandaging the aspiration site after the fluid extraction is performed. The auto-bandaging unit includes a bandage roller having a roller bandage (not shown in the figure), such that one end of this roller bandage sticks to patients body while the operator is placing the stabilizer 108. When the aspiration is performed, the operator may slide or pull the stabilizer 108 by which the bandage roller starts rolling and the bandage from bandage roller covers the site punctured for the aspiration, thus preventing any infection or leakage. In one implementation, the stabilizer 108 is made from a flexible material that may bend into any shape thus facilitating the device 100 to be used for all body parts irrespective of the shape of the body part. The stabilizer 108 further includes stabilizer calibration markings (not shown in the figure) that al lows the stabilizer 1 08 to be fixed correctly on the aspiration site as the stabilizer calibration markings allow detection of aspiration site, for instance, inter-costal space in case of thoracentesis. Further, an opening (not shown in the figure) provided in the stabil izer 1 08 for receiving the cannula 1 1 2 is movable in all directions, thus allowing easy adjustment and location of site for puncturing even after the stabilizer 108 is fixed on the patient's body.

[0026] The stabilizer 108 may further include at least one locking mechanism

(not shown in this figure) for controlled entry of the cannula 1 12 and the catheter 1 10 in the aspiration site. The locking mechanism is provided such that it stops the cannula 1 12 and the catheter 1 10 at a predefined level in the aspiration site, thus ensuring that the cannu la 1 12 does not cause any internal injury to the patient. Further, the locking mechanism faci l itates the stabilizer 108 in preventing any unwanted movement of the cannula I 12 by locking and holding the cannula 1 12 in a fixed position. The stabilizer 108 may further include a sensor (not shown in the figure) for various diagnostic purposes.

[0027] In one embodiment, the aspiration device 100 may include a safety transfer chamber unit (not shown in the figure) for safeguarding the operator and the patient from the cannula 1 1 2 and the needle of the cannula I 12 used for aspiration. The safety transfer chamber unit is attached at the end of the aspiration unit 1 02 opposite to the aspiration site. When activated, the safety transfer chamber unit may quickly retract the cannula 1 1 2 and the needle, which remains safely retracted inside the safety transfer chamber unit until d isposal, substantial ly reducing the risk of a needle stick injury and Commun icable Diseases to the operator and the patient.

[0028] Further, the collection bag 1 06 includes an opening for being connected to the transfer tube 104 for receiving the fluid. The collection bag 1 06 may further incl ude one or more markings ind icating amount of the fluid fi lled in the col lection bag 1 06. In one embodiment, the device 1 00 may be provided as a part of a medical kit (not shown in the figure). Providing the device 1 00 as a part of the medical kit facilitates the operator in performing the aspiration in a much easier and efficient way as all the material used for the aspiration is readily available in the medical kit.

[0029j Figs. 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, and 2i illustrate blown up views of various components of the aspiration device, in accordance with an embodiment of the present subject matter. Fig. 2a illustrates a blown up view of the stabilizer 108, in accordance with an embodiment of the present subject matter. As previously described, the stabilizer 1 08 includes a guide 202 having a guiding slot 204 for receiving the guiding means of the aspiration unit 102 for guiding the movement of the aspiration unit 1 02 while piercing the aspiration site. The stabilizer 108 may further include a stabi lizer base 206 for resting the stabilizer 108 on the aspiration site. In one implementation, the stabilizer 108 may be of any shape and size. The guide 202 may be connected to the stabilizer base 206 for receiving the aspiration unit 1 02.

[0030] Further, as i llustrated in the Fig. 2a, the guiding slot 204 begins from a receiving end 208, receiving the guiding means, and extends up to a predeterm ined length in the guide 202. The predetermined length may be determined based on, for example, an average distance between the aspiration site and an organ from which the fluid has to be extracted. In one embodiment, the stabi lizer 1 08 including the stabil izer base 206 and the guide 202 may be manufactured using a material, such as plastic and metal . In one implementation, the stabil izer base 206 and the guide 202 may be manufactured and provided separately. I n said implementation, the stabi lizer base 206 and the gu ide 202 may be attached during the aspiration process. Further, the stabil izer 108 includes a locking mechanism, such as a velcro strap, a belt, and an adhesive tape for firmly holding the catheter 1 1 0 and the cannula 1 1 2 in the stabil izer 1 08 during the aspiration process. As previously described, the locking mechanism further helps in control led entry, of the cannula 1 1 2 and the catheter 1 10 in the aspiration site as the lock ing mechanism stops the cannula 1 12 and the catheter 1 10 at a predefined level in the aspiration site. Further, the locking mechanism holds the cannula 1 12 in a fixed position, thus preventing any unwanted movement of the cannula 1 12.

[0031 ] Further, the stabilizer 108 includes a slot (not shown in the figure) for adhesive tapes or Bandages that may be pulled out from the slot for fixing the stabilizer 1 08 on the patient's body. Providing the adhesive tape in the slot in the stabilizer 108 facilitates in an easy and sturdy placement of the stabil izer 108 on the patient's body as the adhesive tapes work like extension of the stabil izer 1 08 and are able to hold the stabilizer 108 in position. Further, the operator of the stabilizer 108 does not need to carry the adhesive tapes, belts, or bandages separately, thus facilitating easy transportation of the aspiration device 1 00.

[0032] Figs. 2b and 2c illustrate a blown up view of the base unit 1 14, in accordance with an embodiment of the present subject matter. In one implementation, Fig. 2b illustrates a side view of the base unit I 14. Fig. 2c i l lustrates a top view of the base unit 1 14. The base unit 1 14 includes a first end 2 10 for connecting the catheter 1 10 to the base unit 1 14 and a second end 2 12 for receiving the cannula 1 12, a first port 2 14 for connecting the transfer tube 104 to the aspiration unit 1 02, and a guiding means 2 1 6 for guiding the aspiration unit 102 in the stabil izer 1 08 whi le piercing the aspiration site. Further, as i llustrated in the Fig. 2c, the guiding means 2 16 includes a first slot 2 1 8- 1 and a second slot 2 1 8-2, hereinafter collectively referred to as slots 2 1 8, for receiving a tie wrap (not shown in this figure) for fastening the aspiration unit 102 to the stabilizer 1 08. The base unit 1 14 may further include a base extension 220 for easy movement of the base unit 1 14. The operator may use the base extension 220 for guiding the base unit 1 14 in the stabilizer 1 08, thus avoiding direct contact with the base unit 1 14 and the catheter 1 10. Further, the base unit 1 14 includes a plug (not shown in the figure) for closing the base unit I 1 4 temporarily during withdrawal of the cannula 1 12 from the aspiration unit 1 02, thus preventing flow of fluid from the first end 2 10 to the second end 2 1 2 of the base unit whi le the cannula 1 12 is being removed.

(0033] Fig. 2d illustrates a blown up view of the cannula 1 12, in accordance with an embodiment of the present subject matter. As previously described, the cannula 1 12 is provided for piercing the aspiration site. The cannula 1 12 is adapted to be placed inside the catheter 1 10 by moving the cannula 1 12 in the catheter 1 10 through the second end 2 12 of the base unit 1 14. The cannula 1 12 is provided with a sharp and a pointed piercing end 222 for piercing the aspiration site. Further, as illustrated in Figs. 2d and 2e, a syringe hub 224, is attached on an end opposite to the piercing end 222 for receiving the syringe for the aspiration. In one implementation, a needle (not shown in the figure) may be provided within the cannula 1 12, through the syringe hub 224, for faci l itating piercing of the aspiration site. In said implementation, a pointed end of the needle may protrude through the piercing end 222 of the cannula 1 1 2. The syringe hub 224 may further be adapted to receive the safety transfer chamber unit for safeguarding the operator and the patient from the cannula 1 12 and the needle of the cannula 1 12 used for aspiration. In one implementation, the cannula 1 1 2 may be provided with an air blocking mechanism, such as a spring mechanism, a mechanical mechanism, and a screw mechanism to block air from entering the cannula 1 12.

[0034] Further, as il lustrated in Figs. 2d and 2e. the syringe hub 224 may further be provided with a hub extension 226 for easy movement of the cannula 1 12 when the cannula 1 12 is attached to the syringe hub 224. The operator may hold the cannula 1 12 using the hub extension 226. thus avoiding direct contact with the cannula 1 12. A first hub-end 227- 1 of the syringe hub 224 may be provided to receive the syringe or needle, whi le a second hub-end 227-2 of the syringe hub 224 may be provided to receive the cannula 1 1 2.

(0035] Fig. 2f il lustrates a blown up view of a cover 228 provided for covering the catheter I 1 0 and the cannula 1 12. in accordance with an embodiment of the present subject matter. In one implementation, the cover 228 may be used to cover the catheter 1 10 and the cannula 1 12 when the aspiration device 100 is not being used in order to avoid contamination of the catheter 1 1 0 and the cannula 1 12 due to exposure to surroundings. The cover 228 is made hol low from inside for receiving the catheter 1 1 0 and the cannula 1 12.

[0036] Fig. 2g illustrates a blown up view of a stopper 230 of the aspiration device 100, in accordance with an embodiment of the present subject matter. In one implementation, the stopper 230 is adapted to receive the transfer tube 104 for controlling the flow of the fluid in the transfer tube 104. For the purpose, the stopper 230 may include a sl iding slot 232 to allow the transfer tube 1 04 to be slid in the stopper 230 for controll ing the flow of the fluid. As illustrated the sliding slot 232 is broader at an open end 234 and gradually narrows up to a closing end 236. Thus, the operator may sl ide the stopper 230 over the transfer tube 104 such that when the transfer tube is near the open end 234, the fluid Hows in the transfer tube 1 04 in full volume. However, as the stopper 230 is slid over the transfer tube 1 04 towards the closing end 236, the flow of the fluid gradually decreases and completely stops when the transfer tube 1 04 is at the closing end 236.

[0037] Fig. 2h illustrates a blown up view of a hub cover 238 of the aspiration device 1 00, in accordance with an embodiment of the present subject matter. The hub cover 238 is adapted to be attached to the syringe hub 224 for covering the syringe hub 224. In one implementation, the hub cover 238 may be adapted to receive external components, such as the syringe, the safety transfer chamber unit, and a threaded stopper. As i llustrated, the hub cover 238 includes a narrow end 240 adapted to be inserted inside the syringe hub 224 and a broad end 242 adapted to receive the external components.

[0038] Fig. 2i il lustrates a blown up view of a threaded stopper 244 of the aspiration device 1 00, in accordance with an embodiment of the present subject matter. The threaded stopper 244 is used to close the syringe hub 224 after removing the needle or the syringe from the cannula 1 12 during the aspiration process. In one implementation, the threaded stopper 244 may be attached to the syringe hub 224. In another implementation, the threaded stopper 244 may be attached to the hub cover 238. As illustrated, the threaded stopper 244 may include a protrusion 246 adapted to fit inside either the syringe hub 224 or the hub cover 238.

10039] Fig. 3a, 3b, and 3c illustrate the aspiration device at different stages of aspiration, in accordance with an embodiment of the present subject matter. Fig. 3a, illustrates the aspiration device 100 with al l the components assembled before performing a process of aspiration. As illustrated, the aspiration device 102 includes the stabilizer 108, the base unit 1 14 coupled to the stabil izer 108, the catheter 1 10 attached to the base unit 1 14, the transfer tube 1 04 connected to the catheter I 10 through the first port 214 of the base unit 1 14, the stopper 230 coupled to the transfer tube 1 04, and a tie wrap 302 having its ends inserted in the base unit 1 14. Further, in one implementation, an operator, performing the process of aspiration, may couple a syringe 304 to the cannula 1 12 for performing the aspiration. As can be seen, the syringe 304 is a conventional syringe having a plunger 306 for being used to create a suction effect for draining the fluid from the aspiration site. The syringe 304 may be inserted in the first hub-end 227- 1 of the syringe hub 224 attached to the cannula 1 12. Further, the syringe 304 may have a needle (not shown in the figure) inserted in the cannula I 12 such that a sharp end of the needle protrudes from the cannula I 12. The aspiration unit 1 02 may be used to perform aspiration for various purposes, such as thoracentesis. As illustrated, a first tie-end 308- 1 of the tie wrap 302 is inserted in the second slot 2 1 8-2 of the guiding means 2 16, whi le a second tie-end (not shown in the figure) is inserted in the first slot 2 1 8- 1 of the guiding means 2 16 for fastening the catheter I 1 0 and in turn the aspiration unit 1 02 to the stabi lizer 108. Although, the Figs. 3a-3c are described with reference to the thoracentesis process, it wi ll be understood that the same process may be fol lowed for aspiration of other organs of the body. [0040] In operation, the operator may initially locate and mark an insertion area on the back of the patient. The operator may subsequently clean the insertion area and give local anesthesia. The operator may then place the stabi lizer 108 on the patient's body and affix it using the adhesive tape or bandage provided in the stabilizer 1 08. In one implementation, the operator may pull the adhesive tape from a slot (not shown in the figure) provided in the stabilizer 108 for affixing the stabilizer 108. Further, the operator may pierce the aspiration unit 102 in the abdomen of the patient by pushing the cannula 1 12 through the insertion area on the back to place the cannula 1 12 and the catheter 1 10 on the stabil izer 108. In one implementation, the aspiration unit 1 02 is pushed in the lungs of the patient, through the back, up to a predefined level such that the cannula 1 12 and the catheter 1 10 covering the cannula 1 12 enter the pleural cavity. In order to pierce the aspiration site, the operator may push the syringe 304 such that the guiding means 2 16 slides further in the guiding slot 204, thus piercing the aspiration site. Further, as illustrated, the catheter 1 10 encapsulates the cannula 1 12 during the piercing, such that the piercing end 222 of the cannula 1 12 protrudes from the catheter 1 1 0 during the piercing.

(0041] Fig. 3b illustrates the aspiration unit 102 of the device 100 after being inserted inside the pleural cavity, in accordance with an embodiment of the present subject matter. As il lustrated, the guid ing means 2 1 6 is sl id forward in the guiding slot 204 to pierce the aspiration site. As the cannula I 1 2 and the catheter 1 10 enter the pleural cavity, the catheter 1 1 0 is locked in a steady position using the at least one locking mechanism. In one implementation, the tie wrap 302 may be used as the locking mechanism for the locking the catheter 1 1 0 in a steady position. As illustrated, the first tie-end 308- 1 of the tie wrap 302 is inserted in the second slot 2 1 8-2 of the guiding means 2 1 6 for fastening the catheter 1 10 and in turn the aspiration unit 102 to the stabi l izer 1 08. In one implementation, the operator may pull the plunger 306 of the syringe 304 whi le piercing the aspiration site to create the suction effect such that upon reaching the pleural cavity, the fluid may move into the syringe 304, thus indicating successful piercing of the aspiration site. The cannula 1 12 is then removed from the aspiration unit 102 and the catheter 1 10 is further pushed inside the pleural cavity. The cannula 1 12 is removed in a leak proof manner as a plug provided in the base unit 1 14 closes the catheter 1 10 temporarily, thus preventing flow of fluid from the catheter 1 10 to the base unit 1 14.

10042) Fig. 3c illustrates the aspiration device 102 with the cannula 1 12 and the syringe 304 disengaged from the catheter 1 10 after piercing of the aspiration site, in accordance with an embodiment of the present subject matter. As previously described, after the aspiration site has been pierced, the operator may remove the cannula 1 12 and the syringe 304 from the base unit 1 14. The operator may remove the cannula 1 12 by pul ling the cannula 1 12 out from the base unit 1 14 using the hub extension 226. The operator may further lock the catheter 1 10 with the guide 202 using the tie wrap 302 at a predetermined position such that the fluid easily flows in the catheter 1 10 without the catheter 1 10 touching any organ of the patient. Further, as illustrated, the transfer tube 1 04 is near the open end 234 of the stopper 230, thus allowing the fluid to flow in the transfer tube 104. From the transfer tube 1 04, the fluid moves into the col lection bag 1 06.

(0043) On completion of the aspiration procedure, the operator stops the fluid flow in the transfer tube 1 04 by moving the transfer tube 1 04 in the closing end 236 of the stopper 230. The operator may then disconnect the transfer tube 1 04 and the col lection bag 1 06 from the aspiration unit 1 02. The aspiration un it 102 is subsequently removed from the pleural cavity by pul ling out the catheter I 1 0 and removing the stabi lizer 1 08. As previously described, the stabil izer 1 08 is removed such that the bandage provided in the stabilizer 108 is automatically applied on the point having a piercing caused by the cannula 1 1 2 to prevent any possible leakage in futu e.

[0044] Fig. 4a, 4b. 4c, 4d. 4e, and 4f illustrate the aspiration device at different stages of aspiration, in accordance with another embodiment of the present subject matter. The Fig. 4a i llustrates a top view of the aspiration device 1 00 with the aspiration unit 102 coupled to the stabilizer 108 and the transfer tube 104. Further, as illustrated in the Fig. 4a, the aspiration unit 1 02 includes the cover 228 covering the catheter 1 10 and the cannula 1 12. Upon removal of the cover 228, the catheter 1 10 and the cannula 1 12 get exposed, as illustrated in Fig. 4b, and can be used for performing the aspiration procedure. As illustrated, the aspiration device 102 includes the stabil izer 108, the base unit 1 14, the catheter 1 1 0, the transfer tube 104, the stopper 230, the tie wrap 302, the syringe 304, and a safety transfer chamber unit 402. The safety transfer chamber unit 402 is adapted to be coupled to the aspiration unit 102 for receiving the cannula 1 12 after the aspiration site, has been pierced. In one implementation, the safety transfer chamber unit 402 may include a safety transfer chamber 404 for receiving the cannula 1 12 such that upon activation, the safety transfer chamber unit 402 may quickly retract the cannula 1 12 in the safety transfer chamber 404 for being safely retracted inside the safety transfer chamber unit 402 until disposal.

[0045J Further, the syringe 304 is a conventional syringe having the plunger

306 for being used to create a suction effect for draining the fluid from the aspiration site. The syringe 304 may be inserted in the first hub-end 227- 1 of the syringe hub 224 attached to the cannula 1 12. Further, the syringe 304 may have a needle (not shown in the figure) inserted in the cannula 1 1 2 such that a sharp end of the need le protrudes from the cannula 1 1 2. In operation, the operator may pierce the aspiration unit 1 02 in the abdomen of the patient by pushing the cannula 1 1 2 through the insertion area to pierce the aspiration site to place the cannula 1 12 and the catheter 1 1 0 on the stabilizer 108. The aspiration unit 102 is pushed in the aspiration site up to a predefined level. Further, as can be seen, the syringe hub 224 and the hub extension 226 are positioned at a first safety transfer chamber unit end 406- 1 near the base unit 1 14 to al low the cannula 1 12 to move forward in the guide 202 for piercing the aspiration site. [0046] Fig. 4c i llustrates the aspiration unit 1 02 of the device 100 after being inserted inside the pleural cavity, in accordance with an embodiment of the present subject matter. As il lustrated, the guiding means 2 16 is slid forward in the guiding slot 204 to pierce the aspiration site. As the cannula 1 1 2 and the catheter 1 10 enter the pleural cavity, the catheter 1 10 is locked in a steady position using the at least one locking mechanism. In one implementation, the tie wrap 302 may be used as the locking mechanism for the locking the catheter 1 10 in a steady position. Further, as can be seen, the syringe hub 244 and the hub extension 226 are positioned at the first safety transfer chamber end 406- 1 near the base unit 1 14. The cannula 1 12 is then removed from the aspiration unit 1 02 in a leak proof manner and safe manner as illustrated in detai ls with respect to the Figs. 4d-4f.

[0047] Figs. 4d and 4e il lustrate the aspiration unit 1 02 of the device 1 00 during retraction of the cannula 1 12 in the safety transfer chamber unit 402, in accordance with an embodiment of the present subject matter. In one implementation, as the cannula 1 12 reaches the cavity, the operator may pull back the cannula 1 12 towards the syringe 304 using the hub extension 226. The operator may pul l the hub extension 226 to slide the hub extension 226 in the safety transfer chamber 404 from the first safety-valve end 406- 1 to a second safety transfer chamber end 406-2 as i llustrated in the Fig. 4d. Once the hub extension 226 reaches the second safety-valve end 406-2, the operator may pu ll the hub extension 226 such that the safety transfer chamber unit 402 ful ly extends and a safety sleeve 408 extends from the safety transfer chamber 404 as illustrated in the Fig. 4e. As the safety transfer chamber unit 402 is ful ly extended, the cannula 1 12 moves in the safety transfer chamber 404 for being safely detached from catheter 1 10. Once the cannula I 12 is removed, the catheter 1 10 is further pushed inside the cavity.

[0048] Fig. 4f illustrates the aspiration device 102 with the syringe 304 and the safety transfer chamber unit 402 disengaged from the catheter I 1 0 after piercing of the aspiration site, in accordance with an embodiment of the present subject matter. As previously described, after the aspiration site has been pierced, the operator may retract the cannula 1 12 in the safety transfer chamber unit 402 for safe removal. The safety transfer chamber unit 402 having the cannula 1 1 2 is then detached from the base unit I 14. Once the safety transfer chamber unit 402 is removed, the operator may lock the catheter 1 10 with the guide 202 using the tie wrap 302 at a predetermined position such that the fluid easily flows in the catheter I 10 without the catheter 1 1 0 touching any organ of the patient.

[0049] Fig. 5 i llustrates the stabi lizer 108 of the device 1 00, in accordance with an embodiment of the present subject matter. In said embodiment, the stabilizer 108 includes a stabilizer opening 502 for receiving the cannula 1 12 and the catheter I 10 and a locking mechanism 504 for locking the cannula 1 12 during the aspiration, In one implementation, the locking mechanism 504 is a tricuspid lock with three flaps for locking the cannula 1 12 securely after the insertion of the catheter 1 1 0 in the aspiration site. The stabi lizer 1 08 further includes one or more adhesive tapes 506- 1 , 506-2,. .., 506-n, hereinafter collectively referred to as adhesive tapes 506, for affixing the stabilizer 108 to the patient's body. As previously described, the adhesive tapes 506 may be provided inside the stabilizer 1 08 such that the operator may pull the adhesive tapes 506 from within the stabilizer 108 for affixing the stabilizer 108 at the aspiration site. The stabi lizer 108 further includes a rolling bandage 508 for automatical ly covering the insertion point pierced for the aspiration. Further, the stabilizer 1 08 may include an actuation switch 5 10 for actuating the locking mechanism 504 for locking the cannula 1 12. Upon completion of the aspiration process, the operator may press the actuation switch 5 1 0 to release the cannula 1 12 for being removed from the aspiration site. |0050| Fig. 6a il lustrates the positioning of a first one-way valve 602- 1 and a second one-way valve 602-2, hereinafter collectively referred to as the one-way valves 602, in the device 1 00 in accordance with a first embodiment. For instance, the one-way valves can be placed in the catheter 1 10, such that the first one-way valve 602- 1 prevents transfer of fluid from the cannula 1 1 2 to the catheter 1 10 during aspiration, while the second one-way valve 602-2 prevents the flo of l iquid from the transfer tube 104 into the catheter 1 10 during and after aspiration.

[0051] As il lustrated, the catheter 1 1 0 includes the one-way valves 602 for controlling the flow of the fluid during and after aspiration. The first one-way valve 602- 1 is positioned in the catheter 1 10 at the point of connection of the cannula 1 12 and the catheter 1 10 in order to control the flow of fluid from the syringe 304 back into the catheter 1 1 0. As will be understood, fluid from the catheter 1 10 may flow into the syringe 304 while the operator of the device 100 is pul ling the plunger 306 of the syringe 304 for creating the suction effect and may flow back into the catheter I 10 and the cannula 1 12 when the operator pushes back the plunger 306 inside the syringe 304. The first one-way valve 602- 1 , in such a case, prevents the fluid from entering into the catheter 1 10 and may push back the fluid into the transfer tube 1 04, thus making the fluid flow into the collection bag 106. Further, the second one-way valve 602-2 is positioned in the catheter 1 10 at the point of connection of the catheter 1 10 and the transfer tube 1 04 in order to control the flow of fluid from the collection bag 1 06 back into the catheter 1 10. Providing the second one-way valve 602-2 helps in preventing any reverse flow of the fluid from the collection bag 106 during and after aspiration, thus faci l itating prevention of any leakage and infection.

[0052J As i l lustrated in fig. 6b, the aspiration unit 1 02 is placed on the patient ' s body using the stabi l izer 1 08, with the catheter 1 1 0 pierced in the aspiration site. Further, the second one-way valve 602-2 is positioned at the point of connection of the catheter I 1 0 and the syringe 304 in order to control the flow of fluid from the catheter I 1 0 to the syringe 304. Preventing any flow of the fluid from the catheter 1 10 to the syringe 304 ensures that the only point of exit for the fluid drained from the aspiration site is through the transfer tube 1 04 into the col lection bag 1 06. Further, the first one-way valve 602- 1 prevents the reverse flow of the flu id in the catheter 1 1 0, thus ensuring that al l the fluid is col lected in the col lection bag 1 06. [0053] Fig. 6c and 6d i l lustrates the one-way valve 602 in an operating condition and a non-operating condition, respectively, according to an embodiment of the present subject matter. As illustrated in the fig. 6c, the one-way valve 602 includes a moveable part 604. also referred to as a flap 604, for controlling the flow of the fluid. The flap 604 is provided such that it moves in one direction and allows the fluid to move in that direction, as shown by an arrow 606, thus controll ing the fluid movement in the device 1 00. Fig. 6d illustrates the one-way valve 602 in the non-operating condition. As illustrated in the figure, the flap 604 does not move when the fluid tries to enter the one-way valve 602 from an opposite direction, as shown by an arrow 608, thus preventing the fluid form entering the one-way valve 602.

[0054] Fig. 7 il lustrates the catheter I 10 of the aspiration device 100, in accordance with an embodiment of the present subject matter. As described previously, the catheter I 1 0 may be a hollow sheath covering the cannula 1 12 while piercing the aspiration site. The catheter 1 1 0 includes an opening 702 in a tip 704 at the bottom end from which the lower end (not shown in the figure) of the cannula 1 12 protrudes while piercing the aspiration site. In one implementation, the opening 702 is of a predetermined width such that fluid or tissues can be drained from the aspiration site into the catheter I 1 0 without blocking the opening 702. Further, the tip 704 of the catheter may be provided with multiple secondary openings 706 on the sides in addition to the opening 702. thus ensuring continuous drainage of the fluid even in cases where the opening 702 gets blocked.

|0055] In one implementation, the catheter 1 10 is made from a soft flexible material that al lows the tip to automatically bend along the organs thus ensuring that no damage is done to th in membranes and internal organs. Examples of the soft flexible material include, but are not l im ited, to a wide range of polymers, such as silicone rubber, nitinol. nylon, polyurethane, and polyethylene terephthalate (PETE) latex and thermoplastic elastomers, PTFE, FEP. and PUR. Further, the tip 704 may be tilted at a predetermined angle such that the internal organs are touched by the sides of tip 704 instead of the bottom-most portion of the tip 704, thus avoiding any injuries to the internal organs. The tilted design of the catheter 1 1 0 further provides a straw l ike shape to the catheter 1 10 thus faci litating in bending of the catheter I 10. Thus, when the cannu la 1 12 is inserted into the catheter 1 10, the catheter is straight, however, when the cannula 1 12 is removed, the catheter I 1 0 bends because of the straw l ike shape. Furthermore, the tip 704 may be slightly heavier than the rest of the catheter 704 in order to al low controlled aspiration of the fluid. Providing the heavy tip helps in drainage of minimal effusion as the catheter 1 10 tends to go to the lower most part of the aspiration site, such as the pleural cavity. |0056} The catheter 1 10 may be further provided with calibration markings

708 to indicate distance up to which the catheter 1 10 has been inserted in the aspiration site, thus facil itating the operator in controlling the penetration of the device 1 00. The calibration markings 708 may be used by the operator to decide when to stop penetration of the aspiration site in order to avoid any injury to the internal organs. Further, in certain cases, the calibration markings may faci litate the operator to determine the exact location or depth of cavity filled with fluid, thus helping the operator in determining the extent of infection/disease. In one implementation, the catheter 1 10 may be made from a radio opaque materia! to increase visibi l ity of the catheter 1 10 inside the patient's body, thus facil itating the operator in avoiding injury to the internal organs and to ensure that catheter 1 10 is inserted in the correct aspiration site. Further, the catheter I 10 may be provided with a sensor for various diagnostic purposes.

|0057| A lthough embodiments for an aspiration device have been described in language speci fic to structural features and/or methods, it is understood that the present subject matter is not necessarily limited to the specific features or methods described. Rather, the speci fic features and methods are disclosed as exemplary embodiments for the aspiration device.

Claims

I/We Claim:
An aspiration device ( 100) comprising:
an aspiration unit (102) for extracting fluid from an aspiration site on a patient's body, the aspiration unit (102) comprising:
a cannula (112) for piercing the aspiration site; and a catheter (110) connected to the cannula (112), the catheter
(110) adapted to be inserted in the aspiration site to extract the fluid;
(please suggest if we need to use the word wherein to characterize the invention) a stabilizer (108) to affix the aspiration unit (102) to the patient's body, wherein the stabilizer ( 108) includes a guide (202) having a guiding slot (204) for guiding the movement of the aspiration unit (102) to control insertion of the cannula (112) in the aspiration site while piercing the aspiration site;
a collection bag (106) adapted to be coupled to the catheter (110) for collecting the fluid extracted by the aspiration unit ( 102); and
a transfer tube ( 104) adapted to couple the collection bag ( 106) and the aspiration unit (102) to transfer the fluid from the aspiration unit (102) to the collection bag (106).
The aspiration device (100) as claimed in claim I. wherein the stabilizer (108) includes an adhesive provided on a lower side of the stabilizer (108) to affix the stabilizer (108) on the patient's body during the aspiration.
The aspiration device (100) as claimed in claim I, wherein the aspiration unit (102) further comprising a base unit (I 14) for coupling the aspiration unit (102) to the stabilizer (108) and the transfer tube (104), wherein the base unit (114) comprises:
a first end (210) connected to the catheter (110);
a second end (212) for receiving the cannula (112); a first port (214) for connecting the transfer tube (104) to the aspiration unit ( 102); and
a guiding means (216) for guiding the aspiration unit (102) in the stabilizer (108) while piercing the aspiration site.
The aspiration device (100) as claimed in claim 3, wherein the guiding slot (204) is adapted to receive the guiding means (216) for guiding the movement of the aspiration unit ( 102).
The aspiration device (100) as claimed in claim 3, wherein the guiding means (216) includes a first slot (218-1) and a second slot (218-2) for receiving a tie wrap (302) for fastening the aspiration unit ( 102) to the stabilizer ( 108).
The aspiration device (100) as claimed in claim I further comprising a safety transfer chamber unit (402) adapted to be coupled to the aspiration unit (102) for receiving the cannula (112) after the aspiration site has been pierced.
The aspiration device (100) as claimed in claim 1, wherein the stabilizer (108) further comprising:
a locking mechanism for locking the catheter (110) during fluid extraction; and
an auto-bandaging unit for bandaging the aspiration site after the fluid extraction is performed.
The aspiration device (100) as claimed in claim 1, wherein the catheter (110) comprises one or more one way valves (602) to prevent the fluid from leakage during and after aspiration.
The aspiration device (100) as claimed in claim 1 further comprising a stopper (230) adapted to receive the transfer tube (104) for controlling the flow of the fluid in the transfer tube (104), wherein the stopper (230) includes:
an open end (234) adapted to receive the transfer tube (104) to allow the fluid to flow in the transfer tube (104): a closing end (236) adapted to receive the transfer tube (104) to stop the fluid from flowing in the transfer tube (104); and
a sliding slot (232) to allow the transfer tube (104) to be slid in the stopper (230) for controlling the flow of the fluid.
The aspiration device (100) as claimed in claim 1 further comprising a syringe (304) adapted to be coupled to the cannula (112) for performing the aspiration, wherein the syringe (304) includes a plunger (306) for creating a suction effect for the fluid extraction.
The aspiration device (100) as claimed in claim 1 further comprising a syringe hub (224) for receiving the cannula (112), wherein the syringe hub (224) comprises:
a first hub-end (227-1) to receive a syringe (304); and
a second hub-end (227-2) to receive the cannula (112).
PCT/IB2014/001740 2013-09-05 2014-09-05 Aspiration device WO2015033212A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IN2639DE2013 2013-09-05
IN2639/DEL/2013 2013-09-05

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241969A (en) * 1992-06-10 1993-09-07 Carson Jay W Controlled and safe fine needle aspiration device
US5830152A (en) * 1997-02-24 1998-11-03 Tao; Liang-Che Pencil-grip fine needle aspiration syringe holder
US20030028148A1 (en) * 2001-08-01 2003-02-06 Welcon, Inc. Tubing holder and stabilizer
US20100137841A1 (en) * 2006-10-06 2010-06-03 Khouri Roger K Constant Pressure Syringe For Surgical Use
US20110130679A1 (en) * 2006-08-17 2011-06-02 Reuven Breslauer All-in-one optical microscopic handle
US20120209203A1 (en) * 2009-10-15 2012-08-16 Lucio Gibertoni Medical device for applying catheters, particularly for thoracentesis procedures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241969A (en) * 1992-06-10 1993-09-07 Carson Jay W Controlled and safe fine needle aspiration device
US5830152A (en) * 1997-02-24 1998-11-03 Tao; Liang-Che Pencil-grip fine needle aspiration syringe holder
US20030028148A1 (en) * 2001-08-01 2003-02-06 Welcon, Inc. Tubing holder and stabilizer
US20110130679A1 (en) * 2006-08-17 2011-06-02 Reuven Breslauer All-in-one optical microscopic handle
US20100137841A1 (en) * 2006-10-06 2010-06-03 Khouri Roger K Constant Pressure Syringe For Surgical Use
US20120209203A1 (en) * 2009-10-15 2012-08-16 Lucio Gibertoni Medical device for applying catheters, particularly for thoracentesis procedures

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