US 3814080 A
A needle guide is formed with a tubular section and an opened trough section connected thereto in aligned-spaced relationship. A clip member is formed and arranged to releasably engage an open side of the trough section so that a portion of a lymph vessel may be cradled in the trough section and secured by the clip member. During cannulation the clip is held open and a needle is inserted through the tubular section which guides the needle into the cradled portion of the lymph vessel. The clip is then closed and the needle is held in position within the vessel by the pressure of the clip member.
Claims available in
Description (OCR text may contain errors)
United States Patent 11 1 Weese 128/215 Norman 1- June 4,1974
 VESSEL CANNULATOR AND CLAMP FOR 3,469,580. 9/1969 Huddy 128/215 3,648,684 3/1972 Barnwell 128/215 LYMPHANGIOGRAPHY 3,687,131 8/1972 Rayport 128/2 B  lnventor: David Norman, Denver, C010. g  Assignee: Becton, Dickinson and Company, Primary Examiner-Aldrich F. Medbery East Rutherford, NJ. Attorney, Agent, or Firm-Kane, Dalsimer, Kane, Sul- 22 Filed: Nov. 13, 1972 and F  Appl. No.: 305,869  ABSTRACT 'A needle guide is formed with a tubular section and an  28/2 32 4323 opened trough section connected thereto in aligned- 51 I t Cl 17/00 spaced relationship. A clip member is formed and ur- [58l JL A 20 214 ranged to releasably engage an open side of the trough 1 15872 I 347 5 2 section so that a portion of a lymphvessel may be cra- /21' 4 died .in the trough section and secured by the clip member. During cannulation the clip is held open and a needle is inserted through the tubular section which  References Cited guides the needle into the cradled portion of the UNITED STATES PATENTS lymph vessel. The clip is then closed and the needle is 2,700,385 1/ 1955 Ortiz.. 128/215 held in position within the vessel by the pressure of 2,880,724 4/1959 Verlarge 128/215 the li m mb 3.166.819 Y 9/1965 Robbins ..-27/2l- 3,324.854 12 Claims, 7 Drawing Figures VESSEL'CANNULATOR AND CLAMP FOR LYMPHANGIOGRAPHY BACKGROUND OF THE INVENTION 1. Field of the Invention.
The present invention relates to lymphangiography apparatus and more particularly to a device for guiding a cannulating needle into a lymph vessel and for clamp--- ing the needle in place. I
2; Description of the Prior Art Lymphangiography" is a' valuable diagnostic procedure; however, it has proven to be time-consuming, difficult and tedious for radiologists to perform, particularly the steps involving cannulating the lymph vessel and securing the needle within .the vessel lumen. Lymphangiography is a relatively infrequent procedure and as a result, many radiologists lack the necessary expertise to perform the procedure with ease.
Many lymphangiographic aids have been provided heretofore; however, none have offered a reliable means for puncturing the vessel and guiding the needle into the vessel lumen, which is the most recurrent technical problem in the'procedure. On occasions, after the vessel was punctured, the needle passed through the' wall a second time, thereby creating a leak which nessited a secondor thirdattempt with different vessels.
After cannulation was achieved, the needle had to be secured within the vessel and the accepted procedure was to use'a ligature. While attempting to secure-the needle with a ligature, the radiologists often damaged the vessel. j
In an attempt to avoid the damage caused while using a' ligature to secure the needle with the vessel, a device was developed wherein a flat plate was fixed to the base of a spring clip so that the plate provided a firm surface upon which thevessel could rest while the upper portion of the clip clamped the vessel in place aroundthe needle. While'this device worked well, inexperienced operators still had difficulty penetrating and cannulating the vessels successfully.- I
SUMMARY OF THE INVENTION The present invention contemplates a vesselcannulator and clamp formed from a clip and modified oversized needle. The oversized needle is modified to pro- The primary objective of the present invention is to provide a device that simplifies the lymphangiography procedure.
Another objective of the present invention is to provide a device for guiding a needle into a lymph vessel and for clamping the needle in place within the vessel.
- through the wall. of the lymph vessels a second time.
The foregoing objectives and advantages of the invention will appear more fully hereinafter from a consideration of the detailed description which follows, taken together with the accompanying drawings wherein one embodiment of the invention is illustrated by way. of example. It is to be expressly understood,
vide a tubular section at one end and an open trough section at another end, said sections being connected,
by a portion of the needle from which all but aboutQS Q per cent of the original circumference is removed.
Thus, the tubular section and the trough" section are spaced apart and aligned. The modified needle is then soldered to the base of a-spring clip, the needleis positioned on the clip so that an arm of the clip engages an open side ofthe trough section. l
In use, the lymph vessel'is isolated and placed within the open trough so that a needle inserted through the tubular portion will be guided so as'to puncture the lymph vessel and achieve cannulation, after which the clip is released so as to secure the needle within the ves sel. It is to be understood that the present invention is not limitedto usewith lymph vessels but may be used for cannulating other'types of vessels.
Thus, the present invention provides a convenient means for performing cannulation and for securing the needle within thevessel 1 however, that the drawings are for illustrative purposes only and are not to be considered as defining the limits of the invention.
DESCRIPTION OF DRAWINGS FIG. 1 shows the device of the present invention in its contemplated environment and illustrates how a vess el is positioned for cannulation. v
FIG. 2 is a perspective view of the present invention showing a needle inserted into a vessel and the clamp in position. f I
FIG. 3 is a sectional view taken along line 33 of FIG. 2.
' FIG. 4 is an end view of thepresent invention.
FIG. 5 is a sectional view taken along line 5-5 of FIG.4.
FIG. 6 is a sectionalview taken along line 66;of
such as a number 21 needle, so as to include an open trough 12 at one end and a tubular guide section 14 at another end. A number 21 needle was chosen because it will receive with a high degree of tolerance a 27 I gauge needle, which is the standard size needle used for most lymphangiography procedures. The trough section 12 has a length of approximately 5 mm and is fonned by removing the top portion of the needle by filing or grinding as most clearly shown in FIG. 7. The
trough andthe tubular section are separated by a 2 mm segment of the original needle from which all butabout of the original circumference has been removed by filing or grinding. The tubular section 14 is formed by retaining anentire portion of the barrel of the needle. The outer end 15 of the tubular portion may becut perpendicular to the guide or at an angle to facilitate insertion of a needle. The short connecting segment 16 serves to maintain a precise alignment between'the tubular section 14 and the trough section 12 and to assure the proper spacing between the' section. v
The needle guide 10 is attached to the base 18 of a clip indicated generally as 20. Attachment may be achieved by soldering, welding or by other suitable means. Suitable clips made of a high quality steel are e 3 available from Divin'a Distributors, New Haven, Connecticut. The guide is positioned on the base of the clip so that the trough is upright and an arm 22 of clip engages the open side of trough 12.
is made in the skin over the vessel 34 to be cannulated.
The lymph vessel is isolated and a forceps is used to place the vessel withinthe open trough 12 so that a portion of the vessel is supported and held along a straight line in alignment with the tubular guide. The 'device'is then lifted slightly to create amoderate tension on the vessel and immobilize the vessel as-shown in FIG. '1. The needle 26 isinserted into the tubular guidesection 14 and the clip is held in the open position'while the needle is advance, punctures the vessel and enters the central lumen. The clip is then released so as to secure the needle within the vessel as most clearly shown in FIGS.2and3.
Since the distance between the tip of needle 26 and the end of tubing'28 approximately corresponds to the length of guide 10, the needle may be freely advanced until the tubing engages the guide without fear of puncturing the vessel a second time. The same result could be achieved by placing a clamp on the needlela predetermined distance from the tip or by making a markon the needle indicatinghow far the needlermay be'advanced.
The sides of trough 12 support the walls of the vessel and reduce the possibility of the needle tip penetrating the vessel in the event that the foot moves.
Thus, ties are not required 'to secure the.- needle within the vessel and the needleis relatively secure so that'absolute immobility of the foot is not required. The present invention provides a device' that greatly simplifies the lymphangiography procedure and reduces the 2. A device as described in claim 1, wherein the guide means comprises a tubular section having an opening formed along the line of sufficientsize to receive the cannula. r r l 3. A device asdescribedinclaim 1, wherein the means for supporting a portion of the vessel comprises a trough formed along the line. e
4. A device as described in claim 1, wherein the means for securing the cannula comprises a clip means for engaging the vessel supporting means and an exposed portion of the vess'eL- e 5-. A device as described in claim 4,wherein the clip means includes: r
a base fixedly attached to the supportmeans; and
a movable member for releasably engaging an exposed portion of the vessel supported by the support means. v
6. A device for guiding a cannula into a vessel and for securingthe cannula within the vessel, comprising:
. means for supporting a portion of the vessel along a straight line which comprises a trough formed along the line; g I
means for guiding the cannula along the line so that the cannula tip may be advanced to a position within the lumen of the supportedportion of the vessel which comprises a tubular member having an opening formed along the line of sufficient size to receive .thecannula, said tubular member'and trough being spaced apartto facilitate placing the vessel within the trough; and means for securing the cannulawithin the supportedportion .of.the :vessel. l
7. A device as described in claim 6, wherein the means for securing the cannula within the supported portion of the vessel comprises a clip means having a base fixedly attached to the trough and a movable arm positioned to engage an exposed portion of the vessel time required to successfully perform' the procedure.
The device provides a guide for simplifying cannulation and preventing a seco'ndpuncture of the vessel wall. A
clip is provided for securing the needle within the vessel after cannulation is achieved. The device also helps to prevent the needle from puncturing the vessel should motion of the foot occurs after insertion of the needle.
What is claimed is: r 1. A integral device for guiding a cannula into a lymph vessel and for securing thecannula within the vessel, comprising:
first restraining means on the device forsupporting and securing a portion of said vessel along a straight line;
second restraining means on the device for guidingthe cannula along the same straight line for positioning the cannula tip within the lumenv of the sup- 7 ported portion of the vessel; 1 said second means including means for preventing said cannula from being advanced to a position where the cannula tip punctures the vessel a second time andextends out of said vessel; and
tension means on the device for securing the cannula within the supported portion of the vessel.
greater portion of its circumference removed along a central portion of its length.
9. A device as described in claim 8, wherein the oversized needle has a length substantially equal to the length of the cannula so that when the cannula is fully inserted into theoversizedneedle, the tip of the cannula lies within the lumen of the supported portion of the vessel.
' 10. An apparatus as described in claim 1, wherein said tension means comprises a biased clip means for securing the cannula within the supported portion of 11. A method for cannulating a lymph vessel comprising the steps of;
isolating a portion of the lymph vessel to be cannulated by dissecting saidvesselaWay from surrounding tissue;
positioning a portion of the isolated vessel on a first clip portion shaped to support restrain and align I the positioned portion of the vessel along an axis; inserting and guiding a cannula along a cannula re-' straining means on a second portion of said clip along said axis; and i 6 penetrating into said lymph vessel lumen with said ported portion of the vessel and the penetrated portion cannula. of the cannula so as to secure the cannula within the 12. A method as described in claim 11, additionally supported portion of the vessel. comprising the step of engaging by pressure the sup-